Articles | Volume 16, issue 8
https://doi.org/10.5194/acp-16-5357-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-5357-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
29 Apr 2016
Research article |
| 29 Apr 2016
Seasonal variability of PM2.5 composition and sources in the Klang Valley urban-industrial environment
Norhaniza Amil
School of Environmental and Natural Resource Sciences,
Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600
Bangi, Selangor, Malaysia
School of Industrial Technology (Environmental Division),
Universiti Sains Malaysia, 11800 Penang, Malaysia
School of Environmental and Natural Resource Sciences,
Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600
Bangi, Selangor, Malaysia
Institute for Environmental and Development (LESTARI),
Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor,
Malaysia
Md Firoz Khan
Centre for Tropical Climate Change System (IKLIM),
Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600 Bangi,
Selangor, Malaysia
Maznorizan Mohamad
Malaysian Meteorological Department, Jalan Sultan, 46667 Petaling Jaya,
Selangor, Malaysia
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Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Daytime and nighttime aerosol soluble iron formation in clean and slightly polluted moist air in a coastal city in eastern China
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Atmos. Chem. Phys., 24, 5887–5905, https://doi.org/10.5194/acp-24-5887-2024, https://doi.org/10.5194/acp-24-5887-2024, 2024
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Comprehensive study of optical properties of brown carbon (BrC) in fine aerosols from Tianjin, China, implied that biological emissions are major sources of BrC in summer, whereas fossil fuel combustion and biomass burning emissions are in cold periods. The direct radiation absorption caused by BrC in short wavelengths contributed about 40 % to that caused by BrC in 300–700 nm. Water-insoluble but methanol-soluble BrC contains more protein-like chromophores (PLOM) than that of water-soluble BrC.
Shan Wang, Kezheng Liao, Zijing Zhang, Yuk Ying Cheng, Qiongqiong Wang, Hanzhe Chen, and Jian Zhen Yu
Atmos. Chem. Phys., 24, 5803–5821, https://doi.org/10.5194/acp-24-5803-2024, https://doi.org/10.5194/acp-24-5803-2024, 2024
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In this work, hourly primary and secondary organic carbon were estimated by a novel Bayesian inference approach in suburban Hong Kong. Their multi-temporal-scale variations and evolution characteristics during PM2.5 episodes were examined. The methodology could serve as a guide for other locations with similar monitoring capabilities. The observation-based results are helpful for understanding the evolving nature of secondary organic aerosols and refining the accuracy of model simulations.
Yi-Jia Ma, Yu Xu, Ting Yang, Hong-Wei Xiao, and Hua-Yun Xiao
Atmos. Chem. Phys., 24, 4331–4346, https://doi.org/10.5194/acp-24-4331-2024, https://doi.org/10.5194/acp-24-4331-2024, 2024
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This study provides field-based evidence about the differential impacts of combustion of fresh and aged biomass materials on aerosol nitrogen-containing organic compounds (NOCs) in different seasons in Ürümqi, bridging the linkages between the observations and previous laboratory studies showing the formation mechanisms of NOCs.
Maud Leriche, Pierre Tulet, Laurent Deguillaume, Frédéric Burnet, Aurélie Colomb, Agnès Borbon, Corinne Jambert, Valentin Duflot, Stéphan Houdier, Jean-Luc Jaffrezo, Mickaël Vaïtilingom, Pamela Dominutti, Manon Rocco, Camille Mouchel-Vallon, Samira El Gdachi, Maxence Brissy, Maroua Fathalli, Nicolas Maury, Bert Verreyken, Crist Amelynck, Niels Schoon, Valérie Gros, Jean-Marc Pichon, Mickael Ribeiro, Eric Pique, Emmanuel Leclerc, Thierry Bourrianne, Axel Roy, Eric Moulin, Joël Barrie, Jean-Marc Metzger, Guillaume Péris, Christian Guadagno, Chatrapatty Bhugwant, Jean-Mathieu Tibere, Arnaud Tournigand, Evelyn Freney, Karine Sellegri, Anne-Marie Delort, Pierre Amato, Muriel Joly, Jean-Luc Baray, Pascal Renard, Angelica Bianco, Anne Réchou, and Guillaume Payen
Atmos. Chem. Phys., 24, 4129–4155, https://doi.org/10.5194/acp-24-4129-2024, https://doi.org/10.5194/acp-24-4129-2024, 2024
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Aerosol particles in the atmosphere play a key role in climate change and air pollution. A large number of aerosol particles are formed from the oxidation of volatile organic compounds (VOCs and secondary organic aerosols – SOA). An important field campaign was organized on Réunion in March–April 2019 to understand the formation of SOA in a tropical atmosphere mostly influenced by VOCs emitted by forest and in the presence of clouds. This work synthesizes the results of this campaign.
Ryan N. Farley, James E. Lee, Laura-Hélèna Rivellini, Alex K. Y. Lee, Rachael Dal Porto, Christopher D. Cappa, Kyle Gorkowski, Abu Sayeed Md Shawon, Katherine B. Benedict, Allison C. Aiken, Manvendra K. Dubey, and Qi Zhang
Atmos. Chem. Phys., 24, 3953–3971, https://doi.org/10.5194/acp-24-3953-2024, https://doi.org/10.5194/acp-24-3953-2024, 2024
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The black carbon aerosol composition and mixing state were characterized using a soot particle aerosol mass spectrometer. Single-particle measurements revealed the major role of atmospheric processing in modulating the black carbon mixing state. A significant fraction of soot particles were internally mixed with oxidized organic aerosol and sulfate, with implications for activation as cloud nuclei.
Olga Zografou, Maria Gini, Prodromos Fetfatzis, Konstantinos Granakis, Romanos Foskinis, Manousos Ioannis Manousakas, Fotios Tsopelas, Evangelia Diapouli, Eleni Dovrou, Christina N. Vasilakopoulou, Alexandros Papayannis, Spyros N. Pandis, Athanasios Nenes, and Konstantinos Eleftheriadis
EGUsphere, https://doi.org/10.5194/egusphere-2024-737, https://doi.org/10.5194/egusphere-2024-737, 2024
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PM1 chemical characterization and PMF source apportionment on the combined organic and inorganic fraction took place at the high-altitude (HAC)2 station. Cloud presence was found to reduce PM1 concentrations, affecting sulphate more than organics. Interstitial aerosol was richer in low hygroscopic organics and acidic inorganics, compared to activated. Higher relative abundance of eBC compared to the other components was revealed for FT conditions compared to PBL.
Fenghua Wei, Xing Peng, Liming Cao, Mengxue Tang, Ning Feng, Xiaofeng Huang, and Lingyan He
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The water solubility of secondary organic aerosols (SOA) is a crucial factor in determining their hygroscopicity and climatic impact. Stable carbon isotope and mass spectrometry techniques were combined to assess the water solubility of SOA with different aging degrees in a coastal megacity in China. This work revealed a much higher water-soluble fraction of aged SOA compared to fresh SOA, indicating that the aging degree of SOA has considerable impacts on its water solubility.
Xinya Liu, Bas Henzing, Arjan Hensen, Jan Mulder, Peng Yao, Danielle van Dinther, Jerry van Bronckhorst, Rujin Huang, and Ulrike Dusek
Atmos. Chem. Phys., 24, 3405–3420, https://doi.org/10.5194/acp-24-3405-2024, https://doi.org/10.5194/acp-24-3405-2024, 2024
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We evaluated the time-of-flight aerosol chemical speciation monitor (TOF-ACSM) following the implementation of the PM2.5 aerodynamic lens and a capture vaporizer (CV). The results showed that it significantly improved the accuracy and precision of ACSM in the field observations. The paper elucidates the measurement outcomes of various instruments and provides an analysis of their biases. This comprehensive evaluation is expected to benefit the ACSM community and other aerosol field measurements.
Eva-Lou Edwards, Yonghoon Choi, Ewan C. Crosbie, Joshua P. DiGangi, Glenn S. Diskin, Claire E. Robinson, Michael A. Shook, Edward L. Winstead, Luke D. Ziemba, and Armin Sorooshian
Atmos. Chem. Phys., 24, 3349–3378, https://doi.org/10.5194/acp-24-3349-2024, https://doi.org/10.5194/acp-24-3349-2024, 2024
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We investigate Cl− depletion in sea salt particles over the northwest Atlantic from December 2021 to June 2022 using an airborne dataset. Losses of Cl− are greatest in May and least in December–February and March. Inorganic acidic species can account for all depletion observed for December–February, March, and June near Bermuda but none in May. Quantifying Cl− depletion as a percentage captures seasonal trends in depletion but fails to convey the effects it may have on atmospheric oxidation.
Yue Sun, Yujiao Zhu, Yanbin Qi, Lanxiadi Chen, Jiangshan Mu, Ye Shan, Yu Yang, Yanqiu Nie, Ping Liu, Can Cui, Ji Zhang, Mingxuan Liu, Lingli Zhang, Yufei Wang, Xinfeng Wang, Mingjin Tang, Wenxing Wang, and Likun Xue
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Field observations were conducted at the summit of Changbai Mountain in northeast Asia. The cumulative number concentration of ice-nucleating particles (INPs) varied from 1.6 × 10−3 to 78.3 L−1 over the temperature range of −5.5 to −29.0 ℃. Biological INPs (bio-INPs) accounted for the majority of INPs, and the proportion exceeded 90% above −13.0 ℃. Planetary boundary layer height, valley breezes, and long-distance transport of air mass influence the abundance of bio-INPs.
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In a May–June 2021 expedition in the South China Sea, we analyzed black and brown carbon in marine aerosols, key to light absorption and climate impact. Using advanced in situ and microscope techniques, we observed particle size, structure, and tar balls mixed with various elements. Results showed biomass burning and fossil fuels majorly influence light absorption, especially during significant burning events. This research aids the understanding of carbonaceous aerosols' role in marine climate.
Feifei Li, Shanshan Tang, Jitao Lv, Shiyang Yu, Xu Sun, Dong Cao, Yawei Wang, and Guibin Jiang
EGUsphere, https://doi.org/10.5194/egusphere-2024-37, https://doi.org/10.5194/egusphere-2024-37, 2024
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Targeted derivatization and non-targeted analysis with FT-ICR MS were used to reveal the molecular composition of carbonyl molecules in PM2.5, and the important role of carbonyls in increasing the oxidative potential of organic aerosol was found in the real samples.
C. Isabel Moreno, Radovan Krejci, Jean-Luc Jaffrezo, Gaëlle Uzu, Andrés Alastuey, Marcos F. Andrade, Valeria Mardóñez, Alkuin Maximilian Koenig, Diego Aliaga, Claudia Mohr, Laura Ticona, Fernando Velarde, Luis Blacutt, Ricardo Forno, David N. Whiteman, Alfred Wiedensohler, Patrick Ginot, and Paolo Laj
Atmos. Chem. Phys., 24, 2837–2860, https://doi.org/10.5194/acp-24-2837-2024, https://doi.org/10.5194/acp-24-2837-2024, 2024
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Aerosol chemical composition (ions, sugars, carbonaceous matter) from 2011 to 2020 was studied at Mt. Chacaltaya (5380 m a.s.l., Bolivian Andes). Minimum concentrations occur in the rainy season with maxima in the dry and transition seasons. The origins of the aerosol are located in a radius of hundreds of kilometers: nearby urban and rural areas, natural biogenic emissions, vegetation burning from Amazonia and Chaco, Pacific Ocean emissions, soil dust, and Peruvian volcanism.
Junke Zhang, Yunfei Su, Chunying Chen, Wenkai Guo, Qinwen Tan, Miao Feng, Danlin Song, Tao Jiang, Qiang Chen, Yuan Li, Wei Li, Yizhi Wang, Xiaojuan Huang, Lin Han, Wanqing Wu, and Gehui Wang
Atmos. Chem. Phys., 24, 2803–2820, https://doi.org/10.5194/acp-24-2803-2024, https://doi.org/10.5194/acp-24-2803-2024, 2024
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Typical haze events in Chengdu at the beginning of 2023 were investigated with bulk-chemical and single-particle analyses along with numerical model simulations. By integrating the obtained chemical composition, source, mixing state and numerical simulation results, we infer that Haze-1 was mainly caused by pollutants related to fossil fuel combustion, especially local mobile sources, while Haze-2 was triggered by the secondary pollutants, which mainly came from regional transmission.
Elena Barbaro, Matteo Feltracco, Fabrizio De Blasi, Clara Turetta, Marta Radaelli, Warren Cairns, Giulio Cozzi, Giovanna Mazzi, Marco Casula, Jacopo Gabrieli, Carlo Barbante, and Andrea Gambaro
Atmos. Chem. Phys., 24, 2821–2835, https://doi.org/10.5194/acp-24-2821-2024, https://doi.org/10.5194/acp-24-2821-2024, 2024
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The study analyzed a year of atmospheric aerosol composition at Col Margherita in the Italian Alps. Over 100 chemical markers were identified, including major ions, organic compounds, and trace elements. It revealed sources of aerosol, highlighted impacts of Saharan dust events, and showed anthropogenic pollution's influence despite the site's remoteness. Enrichment factors emphasized non-natural sources of trace elements. Source apportionment identified four key factors affecting the area.
Karl Espen Yttri, Are Bäcklund, Franz Conen, Sabine Eckhardt, Nikolaos Evangeliou, Markus Fiebig, Anne Kasper-Giebl, Avram Gold, Hans Gundersen, Cathrine Lund Myhre, Stephen Matthew Platt, David Simpson, Jason D. Surratt, Sönke Szidat, Martin Rauber, Kjetil Tørseth, Martin Album Ytre-Eide, Zhenfa Zhang, and Wenche Aas
Atmos. Chem. Phys., 24, 2731–2758, https://doi.org/10.5194/acp-24-2731-2024, https://doi.org/10.5194/acp-24-2731-2024, 2024
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We discuss carbonaceous aerosol (CA) observed at the high Arctic Zeppelin Observatory (2017 to 2020). We find that organic aerosol is a significant fraction of the Arctic aerosol, though less than sea salt aerosol and mineral dust, as well as non-sea-salt sulfate, originating mainly from anthropogenic sources in winter and from natural sources in summer, emphasizing the importance of wildfires for biogenic secondary organic aerosol and primary biological aerosol particles observed in the Arctic.
Jing Duan, Ru-Jin Huang, Ying Wang, Wei Xu, Haobin Zhong, Chunshui Lin, Wei Huang, Yifang Gu, Jurgita Ovadnevaite, Darius Ceburnis, and Colin O’Dowd
EGUsphere, https://doi.org/10.5194/egusphere-2024-573, https://doi.org/10.5194/egusphere-2024-573, 2024
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The chemical composition of atmospheric particles showed significant changes in recent years. We investigated the potential effects of inorganics changes on aerosol water uptake and thus secondary organic aerosol formation in wintertime haze, based on the size-resolved measurements of non-refractory fine particulate matter (NR-PM2.5) in Xi’an, Northwest China. This study highlights the key role of aerosol water as a medium to link inorganics and organics in their multiphase processes.
Wei Huang, Cheng Wu, Linyu Gao, Yvette Gramlich, Sophie L. Haslett, Joel Thornton, Felipe D. Lopez-Hilfiker, Ben H. Lee, Junwei Song, Harald Saathoff, Xiaoli Shen, Ramakrishna Ramisetty, Sachchida N. Tripathi, Dilip Ganguly, Feng Jiang, Magdalena Vallon, Siegfried Schobesberger, Taina Yli-Juuti, and Claudia Mohr
Atmos. Chem. Phys., 24, 2607–2624, https://doi.org/10.5194/acp-24-2607-2024, https://doi.org/10.5194/acp-24-2607-2024, 2024
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We present distinct molecular composition and volatility of oxygenated organic aerosol particles in different rural, urban, and mountain environments. We do a comprehensive investigation of the relationship between the chemical composition and volatility of oxygenated organic aerosol particles across different systems and environments. This study provides implications for volatility descriptions of oxygenated organic aerosol particles in different model frameworks.
Jing Cai, Juha Sulo, Yifang Gu, Sebastian Holm, Runlong Cai, Steven Thomas, Almuth Neuberger, Fredrik Mattsson, Marco Paglione, Stefano Decesari, Matteo Rinaldi, Rujing Yin, Diego Aliaga, Wei Huang, Yuanyuan Li, Yvette Gramlich, Giancarlo Ciarelli, Lauriane Quéléver, Nina Sarnela, Katrianne Lehtipalo, Nora Zannoni, Cheng Wu, Wei Nie, Juha Kangasluoma, Claudia Mohr, Markku Kulmala, Qiaozhi Zha, Dominik Stolzenburg, and Federico Bianchi
Atmos. Chem. Phys., 24, 2423–2441, https://doi.org/10.5194/acp-24-2423-2024, https://doi.org/10.5194/acp-24-2423-2024, 2024
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By combining field measurements, simulations and recent chamber experiments, we investigate new particle formation (NPF) and growth in the Po Valley, where both haze and frequent NPF occur. Our results show that sulfuric acid, ammonia and amines are the dominant NPF precursors there. A high NPF rate and a lower condensation sink lead to a greater survival probability for newly formed particles, highlighting the importance of gas-to-particle conversion for aerosol concentrations.
Yangzhi Mo, Jun Li, Guangcai Zhong, Sanyuan Zhu, Shizhen Zhao, Jiao Tang, Hongxing Jiang, Zhineng Cheng, Chongguo Tian, Yingjun Chen, and Gan Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2024-130, https://doi.org/10.5194/egusphere-2024-130, 2024
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In this study, we found that biomass burning (31.0 %) and coal combustion (31.1 %), were the dominant sources of water-insoluble organic carbon in China, with coal combustion sources exhibited the strongest light-absorbing capacity. Additionally, we propose a light-absorbing carbonaceous continuum, revealing that components enriched with fossil sources tend to have stronger light-absorbing capacity, higher aromaticity, higher molecular weights, and greater recalcitrance in the atmosphere.
Cassandra J. Gaston, Joseph M. Prospero, Kristen Foley, Havala O. T. Pye, Lillian Custals, Edmund Blades, Peter Sealy, and James A. Christie
EGUsphere, https://doi.org/10.5194/egusphere-2024-11, https://doi.org/10.5194/egusphere-2024-11, 2024
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To understand how changing emissions have impacted aerosols in remote regions, we measured nitrate and sulfate at Barbados and compared to model predictions from EPA’s Air QUAlity TimE Series (EQUATES). Nitrate was stable except for spikes in 2008 and 2010 due to transported smoke. Sulfate decreased in the 1990s due to reductions of sulfur dioxide (SO2) in the U.S. and Europe, then increased in the 2000s due to anthropogenic emissions from Africa and more efficient oxidation of SO2.
Mikko Heikkilä, Krista Luoma, Timo Mäkelä, and Tiia Grönholm
EGUsphere, https://doi.org/10.5194/egusphere-2023-2823, https://doi.org/10.5194/egusphere-2023-2823, 2024
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Black carbon (BC) concentration was measured from 211 ship exhaust gas plumes at a remote marine station. Emission factors of BC were calculated in grams/kilograms fuel. Ships using exhaust gas cleaning systems (EGCS) were found to emit 80 % less BC than ships without EGCS. Emission factors were used to model BC emissions as a function of speed to define the effect of speed reduction. BC emissions increased with a decrease in speed from the ship’s service speed.
Kaori Kawana, Fumikazu Taketani, Kazuhiko Matsumoto, Yutaka Tobo, Yoko Iwamoto, Takuma Miyakawa, Akinori Ito, and Yugo Kanaya
Atmos. Chem. Phys., 24, 1777–1799, https://doi.org/10.5194/acp-24-1777-2024, https://doi.org/10.5194/acp-24-1777-2024, 2024
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Based on comprehensive shipborne observations, we found strong links between sea-surface biological materials and the formation of atmospheric fluorescent bioaerosols, cloud condensation nuclei, and ice-nucleating particles over the Arctic Ocean and Bering Sea during autumn 2019. Taking the wind-speed effect into account, we propose equations to approximate the links for this cruise, which can be used as a guide for modeling as well as for systematic comparisons with other observations.
Chen He, Hanxiong Che, Zier Bao, Yiliang Liu, Qing Li, Miao Hu, Jiawei Zhou, Shumin Zhang, Xiaojiang Yao, Quan Shi, Chunmao Chen, Yan Han, Lingshuo Meng, Xin Long, Fumo Yang, and Yang Chen
Atmos. Chem. Phys., 24, 1627–1639, https://doi.org/10.5194/acp-24-1627-2024, https://doi.org/10.5194/acp-24-1627-2024, 2024
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We examined the daily evolution of high molecular-weight organic compounds with a molecular weight of up to 1000 Da in order to comprehend their behaviors in the atmosphere under actual conditions. These compounds were proven to undergo multi-generation oxidation, carboxylation, and nitrification via both day- and nighttime chemistry.
Karine Desboeufs, Paola Formenti, Raquel Torres-Sánchez, Kerstin Schepanski, Jean-Pierre Chaboureau, Hendrik Andersen, Jan Cermak, Stefanie Feuerstein, Benoit Laurent, Danitza Klopper, Andreas Namwoonde, Mathieu Cazaunau, Servanne Chevaillier, Anaïs Feron, Cécile Mirande-Bret, Sylvain Triquet, and Stuart J. Piketh
Atmos. Chem. Phys., 24, 1525–1541, https://doi.org/10.5194/acp-24-1525-2024, https://doi.org/10.5194/acp-24-1525-2024, 2024
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This study investigates the fractional solubility of iron (Fe) in dust particles along the coast of Namibia, a critical region for the atmospheric Fe supply of the South Atlantic Ocean. Our results suggest a possible two-way interplay whereby marine biogenic emissions from the coastal marine ecosystems into the atmosphere would increase the solubility of Fe-bearing dust by photo-reduction processes. The subsequent deposition of soluble Fe could act to further enhance marine biogenic emissions.
Sunhye Kim, Jo Machesky, Drew R. Gentner, and Albert A. Presto
Atmos. Chem. Phys., 24, 1281–1298, https://doi.org/10.5194/acp-24-1281-2024, https://doi.org/10.5194/acp-24-1281-2024, 2024
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Cooking emissions are often an overlooked source of air pollution. We used a mobile lab to measure the characteristics of particles emitted from cooking sites in two cities. Our findings showed that cooking releases a substantial number of fine particles. While most emissions were similar, a bakery site showed distinctive chemical compositions with higher nitrogen compound levels. Thus, understanding the particle emissions from different cooking activities is crucial.
Nansi Fakhri, Robin Stevens, Arnold Downey, Konstantina Oikonomou, Jean Sciare, Charbel Afif, and Patrick L. Hayes
Atmos. Chem. Phys., 24, 1193–1212, https://doi.org/10.5194/acp-24-1193-2024, https://doi.org/10.5194/acp-24-1193-2024, 2024
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We investigated the chemical composition of atmospheric fine particles, their emission sources, and the potential human health risk associated with trace elements in particles for an urban site in Montréal over a 3-month period (August–November). This study represents the first time that such extensive composition measurements were included in an urban source apportionment study in Canada, and it provides greater resolution of fine-particle sources than has been previously achieved in Canada.
Hanjin Yoo, Li Wu, Hong Geng, and Chul-Un Ro
Atmos. Chem. Phys., 24, 853–867, https://doi.org/10.5194/acp-24-853-2024, https://doi.org/10.5194/acp-24-853-2024, 2024
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We conducted an investigation of atmospheric aerosols collected in Seoul, South Korea, during the KORUS-AQ campaign on a single-particle basis. We were able to identify their sources, the atmospheric fate, and the impacts of local emissions and long-range transport on aerosol composition. Additionally, we traced potential sources of non-exhaust heavy-metal particles. This comprehensive analysis provides valuable insights into the complex dynamics of urban aerosols.
Eric Schneider, Hendryk Czech, Olga Popovicheva, Marina Chichaeva, Vasily Kobelev, Nikolay Kasimov, Tatiana Minkina, Christopher Paul Rüger, and Ralf Zimmermann
Atmos. Chem. Phys., 24, 553–576, https://doi.org/10.5194/acp-24-553-2024, https://doi.org/10.5194/acp-24-553-2024, 2024
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This study provides insights into the complex chemical composition of long-range-transported wildfire plumes from Yakutia, which underwent different levels of atmospheric processing. With complementary mass spectrometric techniques, we improve our understanding of the chemical processes and atmospheric fate of wildfire plumes. Unprecedented high levels of carbonaceous aerosols crossed the polar circle with implications for the Arctic ecosystem and consequently climate.
Qiongqiong Wang, Shuhui Zhu, Shan Wang, Cheng Huang, Yusen Duan, and Jian Zhen Yu
Atmos. Chem. Phys., 24, 475–486, https://doi.org/10.5194/acp-24-475-2024, https://doi.org/10.5194/acp-24-475-2024, 2024
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We investigated short-term source apportionment of PM2.5 utilizing rolling positive matrix factorization (PMF) and online PM chemical speciation data, which included source-specific organic tracers collected over a period of 37 d during the winter of 2019–2020 in suburban Shanghai, China. The findings highlight that by imposing constraints on the primary source profiles, short-term PMF analysis successfully replicated both the individual primary sources and the total secondary sources.
Jiyuan Yang, Guoyang Lei, Jinfeng Zhu, Yutong Wu, Chang Liu, Kai Hu, Junsong Bao, Zitong Zhang, Weili Lin, and Jun Jin
Atmos. Chem. Phys., 24, 123–136, https://doi.org/10.5194/acp-24-123-2024, https://doi.org/10.5194/acp-24-123-2024, 2024
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The atmospheric pollution and formation mechanisms of particulate-bound alkyl nitrate in Beijing were studied. C9–C16 long-chain n-alkyl nitrates negatively correlated with O3 but positively correlated with PM2.5 and NO2, so they may not be produced during gas-phase homogeneous reactions in the photochemical process but form through reactions between alkanes and nitrates on PM surfaces. Particulate-bound n-alkyl nitrates strongly affect both haze pollution and atmospheric visibility.
Yuanyuan Qin, Xinghua Zhang, Wei Huang, Juanjuan Qin, Xiaoyu Hu, Yuxuan Cao, Tianyi Zhao, Yang Zhang, Jihua Tan, Ziyin Zhang, Xinming Wang, and Zhenzhen Wang
EGUsphere, https://doi.org/10.5194/egusphere-2023-2703, https://doi.org/10.5194/egusphere-2023-2703, 2024
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Environmental persistent free radicals (EPFRs) and reactive oxygen species (ROS) play an active role in the atmosphere. We quantified the impact of control measures on EPFRs and ROS and found that strict control measures have effectively reduced their emissions, largely linked to a significant decrease in secondary aerosols. Our findings have great implications for further understanding the formation and sources and for developing future air quality management policies targeting EPFRs and ROS.
Lisa Azzarello, Rebecca A. Washenfelder, Michael A. Robinson, Alessandro Franchin, Caroline C. Womack, Christopher D. Holmes, Steven S. Brown, Ann Middlebrook, Tim Newberger, Colm Sweeney, and Cora J. Young
Atmos. Chem. Phys., 23, 15643–15654, https://doi.org/10.5194/acp-23-15643-2023, https://doi.org/10.5194/acp-23-15643-2023, 2023
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We present a molecular size-resolved offline analysis of water-soluble brown carbon collected on an aircraft during FIREX-AQ. The smoke plumes were aged 0 to 5 h, where absorption was dominated by small molecular weight molecules, brown carbon absorption downwind did not consistently decrease, and the measurements differed from online absorption measurements of the same samples. We show how differences between online and offline absorption could be related to different measurement conditions.
Sebastian Zeppenfeld, Manuela van Pinxteren, Markus Hartmann, Moritz Zeising, Astrid Bracher, and Hartmut Herrmann
Atmos. Chem. Phys., 23, 15561–15587, https://doi.org/10.5194/acp-23-15561-2023, https://doi.org/10.5194/acp-23-15561-2023, 2023
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Marine carbohydrates are produced in the surface of the ocean, enter the atmophere as part of sea spray aerosol particles, and potentially contribute to the formation of fog and clouds. Here, we present the results of a sea–air transfer study of marine carbohydrates conducted in the high Arctic. Besides a chemo-selective transfer, we observed a quick atmospheric aging of carbohydrates, possibly as a result of both biotic and abiotic processes.
Xing Wei, Yanjie Shen, Xiao-Ying Yu, Yang Gao, Huiwang Gao, Ming Chu, Yujiao Zhu, and Xiaohong Yao
Atmos. Chem. Phys., 23, 15325–15350, https://doi.org/10.5194/acp-23-15325-2023, https://doi.org/10.5194/acp-23-15325-2023, 2023
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We investigate the contribution of grown new particles to Nccn at a rural mountain site in the North China Plain. The total particle number concentrations (Ncn) observed on 8 new particle formation (NPF) days were higher compared to non-NPF days. The Nccn at 0.2 % supersaturation (SS) and 0.4 % SS on the NPF days was significantly lower than on non-NPF days. Only one of eight NPF events had detectable net contributions to Nccn at 0.4 % SS and 1.0 % SS with increased κ values.
Yuquan Gong, Ru-Jin Huang, Lu Yang, Ting Wang, Wei Yuan, Wei Xu, Wenjuan Cao, Yang Wang, and Yongjie Li
Atmos. Chem. Phys., 23, 15197–15207, https://doi.org/10.5194/acp-23-15197-2023, https://doi.org/10.5194/acp-23-15197-2023, 2023
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This study reveals the large day–night differences in brown carbon (BrC) chromophore composition, which was not known previously. The results provide insights into the effects of atmospheric processes and emissions on BrC composition.
Zijun Zhang, Weiqi Xu, Yi Zhang, Wei Zhou, Xiangyu Xu, Aodong Du, Yinzhou Zhang, Hongqin Qiao, Ye Kuang, Xiaole Pan, Zifa Wang, Xueling Cheng, Lanzhong Liu, Qingyang Fu, Douglas R. Worsnop, Jie Li, and Yele Sun
EGUsphere, https://doi.org/10.5194/egusphere-2023-2684, https://doi.org/10.5194/egusphere-2023-2684, 2023
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We investigated aerosol composition, sources, and the interaction between secondary organic aerosol (SOA) and clouds at a regional mountain site in southeastern China. Clouds efficiently scavenge more-oxidized SOA; however, cloud evaporation leads to the production of less-oxidized SOA. The unexpectedly high presence of nitrate in aerosol particles indicates that nitrate formed in polluted areas has undergone interactions with clouds, significantly influencing the regional background site.
Ryan N. Farley, Sonya Collier, Christopher D. Cappa, Leah R. Williams, Timothy B. Onasch, Lynn M. Russell, Hwajin Kim, and Qi Zhang
Atmos. Chem. Phys., 23, 15039–15056, https://doi.org/10.5194/acp-23-15039-2023, https://doi.org/10.5194/acp-23-15039-2023, 2023
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Soot particles, also known as black carbon (BC), have important implications for global climate and regional air quality. After the particles are emitted, BC can be coated with other material, impacting the aerosol properties. We selectively measured the composition of particles containing BC to explore their sources and chemical transformations in the atmosphere. We focus on a persistent, multiday fog event in order to study the effects of chemical reactions occurring within liquid droplets.
Yuan Dai, Junfeng Wang, Houjun Wang, Shijie Cui, Yunjiang Zhang, Haiwei Li, Yun Wu, Ming Wang, Eleonora Aruffo, and Xinlei Ge
EGUsphere, https://doi.org/10.5194/egusphere-2023-2454, https://doi.org/10.5194/egusphere-2023-2454, 2023
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Short-term strict emission control can improve air quality but the effectiveness requires assessment. During 2021 summer COVID-19 lockdown in Yangzhou, we showed that the PM2.5 level did not decrease with decrease of gaseous pollutants as aged black carbon-containing particles increased substantially, due to enhanced atmospheric oxidizing capacity and high relative humidity. The results highlights the importance of a regionally balanced control strategy for future air quality management.
Xiaoxiao Li, Yijing Chen, Yuyang Li, Runlong Cai, Yiran Li, Chenjuan Deng, Jin Wu, Chao Yan, Hairong Cheng, Yongchun Liu, Markku Kulmala, Jiming Hao, James N. Smith, and Jingkun Jiang
Atmos. Chem. Phys., 23, 14801–14812, https://doi.org/10.5194/acp-23-14801-2023, https://doi.org/10.5194/acp-23-14801-2023, 2023
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Near-continuous measurements show the composition, sources, and seasonal variations of ultrafine particles (UFPs) in urban Beijing. Vehicle and cooking emissions and new particle formation are the main sources of UFPs, and aqueous/heterogeneous processes increase UFP mode diameters. UFPs are the highest in winter due to the highest primary particle emission rates and new particle formation rates, and CHO fractions are the highest in summer due to the strongest photooxidation.
Jiaqi Wang, Jian Gao, Fei Che, Xin Yang, Yuanqin Yang, Lei Liu, Yan Xiang, and Haisheng Li
Atmos. Chem. Phys., 23, 14715–14733, https://doi.org/10.5194/acp-23-14715-2023, https://doi.org/10.5194/acp-23-14715-2023, 2023
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Regional-scale observations of surface O3, PM2.5 and its major chemical species, mixing layer height (MLH), and other meteorological parameters were made in the North China Plain during summer. Unlike the cold season, synchronized increases in MDA8 O3 and PM2.5 under medium MLH conditions have been witnessed. The increasing trend of PM2.5 was associated with enhanced secondary chemical formation. The correlation between MLH and secondary air pollutants should be treated with care in hot seasons.
Takuma Miyakawa, Akinori Ito, Chunmao Zhu, Atsushi Shimizu, Erika Matsumoto, Yusuke Mizuno, and Yugo Kanaya
Atmos. Chem. Phys., 23, 14609–14626, https://doi.org/10.5194/acp-23-14609-2023, https://doi.org/10.5194/acp-23-14609-2023, 2023
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This study conducted semi-continuous measurements of PM2.5 aerosols and their elemental composition in western Japan, during spring 2018. It analyzed the emissions, transport, and wet removal of elements such as Pb, Cu, Fe, and Mn. It also assessed the accuracy of modeled concentrations and found overestimations of BC and underestimations of Cu and anthropogenic Fe in East Asia. Insights into emissions, removals, and source apportionment of trace metals in the East Asian outflow were provided.
Jingjing Meng, Yachen Wang, Yuanyuan Li, Tonglin Huang, Zhifei Wang, Yiqiu Wang, Min Chen, Zhanfang Hou, Houhua Zhou, Keding Lu, Kimitaka Kawamura, and Pingqing Fu
Atmos. Chem. Phys., 23, 14481–14503, https://doi.org/10.5194/acp-23-14481-2023, https://doi.org/10.5194/acp-23-14481-2023, 2023
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This study investigated the effect of COVID-19 lockdown (LCD) measures on the formation and evolutionary process of diacids and related compounds from field observations. Results demonstrate that more aged organic aerosols are observed during the LCD due to the enhanced photochemical oxidation. Our study also found that the reactivity of 13C was higher than that of 12C in the gaseous photochemical oxidation, leading to higher δ13C values of C2 during the LCD than before the LCD.
Cited articles
Abas, M. R. B. and Simoneit, B. R. T.: Composition of extractable organic matter of air particles from Malaysia: Initial study, Atmos. Environ., 30, 2779–2793, 1996.
Abdullah, A. M., Abu Samah, M. A., and Jun, T. Y.: An Overview of the Air Pollution Trend in Klang Valley, Malaysia, Open Environ. J., 6, 13–19, https://doi.org/10.2174/1876325101206010013, 2012.
Afroz, R., Hassan, M. N., and Ibrahim, N. A.: Review of air pollution and health impacts in Malaysia, Environ. Res., 92, 71–77, https://doi.org/10.1016/s0013-9351(02)00059-2, 2003.
Aldabe, J., Elustondo, D., Santamaría, C., Lasheras, E., Pandolfi, M., Alastuey, A., Querol, X., and Santamaría, J. M.: Chemical characterisation and source apportionment of PM2.5 and PM10 at rural, urban and traffic sites in Navarra (North of Spain), Atmos. Res., 102, 191–205, https://doi.org/10.1016/j.atmosres.2011.07.003, 2011.
Almeida, S. M., Pio, C. A., Freitas, M. C., Reis, M. A., and Trancoso, M. A.: Source apportionment of fine and coarse particulate matter in a sub-urban area at the Western European Coast, Atmos. Environ., 39, 3127–3138, https://doi.org/10.1016/j.atmosenv.2005.01.048, 2005.
Almeida, S. M., Pio, C. A., Freitas, M. C., Reis, M. A., and Trancoso, M. A.: Approaching PM2.5 and PM2.5 – 10 source apportionment by mass balance analysis, principal component analysis and particle size distribution, Sci. Total Environ., 368, 663–674, 2006.
Amil, N., Latif, M., and Khan, M.: Characterization and Source Apportionment of Fine Particulate Matter during 2011 Haze Episode in UKM Bangi, Malaysia, in: From Sources to Solution, edited by: Aris, A. Z., Tengku Ismail, T. H., Harun, R., Abdullah, A. M., and Ishak, M. Y., Springer Singapore, 363–367, 2014.
Awang, M. B., Jaafar, A. B., Abdullah, A. M., Ismail, M. B., Hassan, M. N., Abdullah, R., Johan, S., and Noor, H.: Air quality in Malaysia: Impacts, management issues and future challenges, Respirology, 5, 183–196, https://doi.org/10.1046/j.1440-1843.2000.00248.x, 2000.
Azmi, S. Z., Latif, M. T., Ismail, A. S., Juneng, L., and Jemain, A. A.: Trend and status of air quality at three different monitoring stations in the Klang Valley, Malaysia, Air Qual. Atmos. Health, 3, 53–64, https://doi.org/10.1007/s11869-009-0051-1, 2010.
Balakrishnaiah, G., Wei, H., Chun-Nan, L., Amit, A., Chuen-Jinn, T., Gwo-Dong, R., Yue-Chuen, W., and Chung-Fang, C.: Source Characterization and Apportionment of PM10, PM2.5 and PM0.1 by Using Positive Matrix Factorization, Aerosol Air Qual. Res., 12, 476–491, https://doi.org/10.4209/aaqr.2012.04.0084, 2012.
Balasubramanian, R., Qian, W. B., Decesari, S., Facchini, M. C., and Fuzzi, S.: Comprehensive characterization of PM2.5 aerosols in Singapore, J. Geophys. Res.-Atmos., 108, 4523, https://doi.org/10.1029/2002JD002517, 2003.
Beckerman, B., Jerrett, M., Brook, J. R., Verma, D. K., Arain, M. A., and Finkelstein, M. M.: Correlation of nitrogen dioxide with other traffic pollutants near a major expressway, Atmos. Environ., 42, 275–290, https://doi.org/10.1016/j.atmosenv.2007.09.042, 2008.
Begum, B. A., Kim, E., Biswas, S. K., and Hopke, P. K.: Investigation of sources of atmospheric aerosol at urban and semi-urban areas in Bangladesh, Atmos. Environ., 38, 3025–3038, https://doi.org/10.1016/j.atmosenv.2004.02.042, 2004.
Bressi, M., Sciare, J., Ghersi, V., Bonnaire, N., Nicolas, J. B., Petit, J.-E., Moukhtar, S., Rosso, A., Mihalopoulos, N., and Féron, A.: A one-year comprehensive chemical characterisation of fine aerosol (PM2.5) at urban, suburban and rural background sites in the region of Paris (France), Atmos. Chem. Phys., 13, 7825–7844, https://doi.org/10.5194/acp-13-7825-2013, 2013.
Cesari, D., Contini, D., Genga, A., Siciliano, M., Elefante, C., Baglivi, F., and Daniele, L.: Analysis of raw soils and their re-suspended PM10 fractions: Characterisation of source profiles and enrichment factors, Appl. Geochem., 27, 1238–1246, https://doi.org/10.1016/j.apgeochem.2012.02.029, 2012.
Chang, D., Song, Y., and Liu, B.: Visibility trends in six megacities in China 1973–2007, Atmos. Res., 94, 161–167, https://doi.org/10.1016/j.atmosres.2009.05.006, 2009.
Cheng, Y., Lee, S. C., Ho, K. F., Chow, J. C., Watson, J. G., Louie, P. K. K., Cao, J. J., and Hai, X.: Chemically-speciated on-road PM2.5 motor vehicle emission factors in Hong Kong, Sci. Total Environ., 408, 1621–1627, https://doi.org/10.1016/j.scitotenv.2009.11.061, 2010.
Cohen, D. D., Garton, D., Stelcer, E., Hawas, O., Wang, T., Poon, S., Kim, J., Choi, B. C., Oh, S. N., Shin, H. J., Ko, M. Y., and Uematsu, M.: Multielemental analysis and characterization of fine aerosols at several key ACE-Asia sites, J. Geophys. Res.-Atmos., 109, 11–18, https://doi.org/10.1029/2003JD003569, 2004.
Contini, D., Cesari, D., Donateo, A., Chirizzi, D., and Belosi, F.: Characterization of PM10 and PM2.5 and Their Metals Content in Different Typologies of Sites in South-Eastern Italy, Atmosphere, 5, 435–453, https://doi.org/10.3390/atmos5020435, 2014.
Diederen, H. S. M. A., Guicherit, R., and HolLonder, J. C. T.: Visibility reduction by air pollution in The Netherlands, Atmos. Environ., 19, 377–383, https://doi.org/10.1016/0004-6981(85)90105-2, 1985.
Dockery, D. W., Pope, C. A., Xu, X., Spengler, J. D., Ware, J. H., Fay, M. E., Ferris, B. G., and Speizer, F. E.: An Association between Air Pollution and Mortality in Six US Cities, New Engl. J. Med., 329, 1753–1759, https://doi.org/10.1056/NEJM199312093292401, 1993.
Dongarrà, G., Manno, E., Varrica, D., Lombardo, M., and Vultaggio, M.: Study on ambient concentrations of PM10, PM10–2.5, PM2.5 and gaseous pollutants. Trace elements and chemical speciation of atmospheric particulates, Atmos. Environ., 44, 5244–5257, https://doi.org/10.1016/j.atmosenv.2010.08.041, 2010.
Doumbia, E. H. T., Liousse, C., Galy-Lacaux, C., Ndiaye, S. A., Diop, B., Ouafo, M., Assamoi, E. M., Gardrat, E., Castera, P., Rosset, R., Akpo, A., and Sigha, L.: Real time black carbon measurements in West and Central Africa urban sites, Atmos. Environ., 54, 529–537, https://doi.org/10.1016/j.atmosenv.2012.02.005, 2012.
Doyle, M. and Dorling, S.: Visibility trends in the UK 1950–1997, Atmos. Environ., 36, 3161–3172 https://doi.org/10.1016/S1352-2310(02)00248-0, 2002.
Eatough, D. J., Long, R. W., Modey, W. K., and Eatough, N. L.: Semi-volatile secondary organic aerosol in urban atmospheres: meeting a measurement challenge, Atmos. Environ., 37, 1277–1292, 2003.
Eatough, D. J., Anderson, R. R., Martello, D. V., Modey, W. K., and Mangelson, N. F.: Apportionment of Ambient Primary and Secondary PM2.5 During a 2001 Summer Intensive Study at the NETL Pittsburgh Site Using PMF2 and EPA UNMIX, Aerosol Sci. Technol., 40, 925–940, https://doi.org/10.1080/02786820600796616, 2006.
Echalar, F., Gaudichet, A., Cachier, H., and Artaxo, P.: Aerosol emissions by tropical forest and savanna biomass burning: Characteristic trace elements and fluxes, Geophy. Res. Lett., 22, 3039–3042, https://doi.org/10.1029/95GL03170, 1995.
Ee-Ling, O., Mustaffa, N. I., Amil, N., Khan, M. F., and Latif, M. T.: Source Contribution of PM2.5 at Different Locations on the Malaysian Peninsula, B. Environ. Contam. Tox., 94, 537–542, https://doi.org/10.1007/s00128-015-1477-9, 2015.
European Commission: Air Quality Standards: http://ec.europa.eu/environment/air/quality/standards.htm, last access: 2 June 2015.
Ewen, C., Anagnostopoulou, M., and Ward, N.: Monitoring of heavy metal levels in roadside dusts of Thessaloniki, Greece in relation to motor vehicle traffic density and flow, Environ. Monit. Assess., 157, 483–498, https://doi.org/10.1007/s10661-008-0550-9, 2009.
Fang, G.-C., Chang, C.-N., Chu, C.-C., Wu, Y.-S., Fu, P. P.-C., Yang, I. L., and Chen, M.-H.: Characterization of particulate, metallic elements of TSP, PM2.5 and PM2.5-10 aerosols at a farm sampling site in Taiwan, Taichung, Sci. Total Environ., 308, 157–166, https://doi.org/10.1016/S0048-9697(02)00648-4, 2003.
Farao, C., Canepari, S., Perrino, C., and Harrison, R. M.: Sources of PM in an Industrial Area: Comparison between Receptor Model Results and Semiempirical Calculations of Source Contributions, Aerosol Air Qual. Res., 14, 1558–1572, https://doi.org/10.4209/aaqr.2013.08.0281, 2014.
Favez, O., El Haddad, I., Piot, C., Boréave, A., Abidi, E., Marchand, N., Jaffrezo, J.-L., Besombes, J.-L., Personnaz, M.-B., Sciare, J., Wortham, H., George, C., and D'Anna, B.: Inter-comparison of source apportionment models for the estimation of wood burning aerosols during wintertime in an Alpine city (Grenoble, France), Atmos. Chem. Phys., 10, 5295–5314, https://doi.org/10.5194/acp-10-5295-2010, 2010.
Fuzzi, S., Baltensperger, U., Carslaw, K., Decesari, S., Denier van der Gon, H., Facchini, M. C., Fowler, D., Koren, I., Langford, B., Lohmann, U., Nemitz, E., Pandis, S., Riipinen, I., Rudich, Y., Schaap, M., Slowik, J. G., Spracklen, D. V., Vignati, E., Wild, M., Williams, M., and Gilardoni, S.: Particulate matter, air quality and climate: lessons learned and future needs, Atmos. Chem. Phys., 15, 8217–8299, https://doi.org/10.5194/acp-15-8217-2015, 2015.
Gehrig, R. and Buchmann, B.: Characterising seasonal variations and spatial distribution of ambient PM10 and PM2.5 concentrations based on long-term Swiss monitoring data, Atmos. Environ., 37, 2571–2580, 2003.
Gibson, M. D., Pierce, J. R., Waugh, D., Kuchta, J. S., Chisholm, L., Duck, T. J., Hopper, J. T., Beauchamp, S., King, G. H., Franklin, J. E., Leaitch, W. R., Wheeler, A. J., Li, Z., Gagnon, G. A., and Palmer, P. I.: Identifying the sources driving observed PM2.5 temporal variability over Halifax, Nova Scotia, during BORTAS-B, Atmos. Chem. Phys., 13, 7199–7213, https://doi.org/10.5194/acp-13-7199-2013, 2013.
Gomišček, B., Hauck, H., Stopper, S., and Preining, O.: Spatial and temporal variations of PM1, PM2.5, PM10 and particle number concentration during the AUPHEP-project, Atmos. Environ., 38, 3917–3934, https://doi.org/10.1016/j.atmosenv.2004.03.056, 2004.
Grossi, C. M. and Brimblecombe, P.: The effect of atmospheric pollution on building materials, J. Phys. IV, 12, 197–210, 2002.
Gugamsetty, B., Wei, H., Liu, C.-N., Awasthi, A., Tsai, C.-J., Roam, G.-D., Wu, Y.-C., and Chen, C.-F.: Source Characterization and Apportionment of PM10, PM2.5 and PM0.1 by Using Positive Matrix Factorization, Aerosol Air Qual. Res., 12, 476–491, https://doi.org/10.4209/aaqr.2012.04.0084, 2012.
Halonen, J.: Acute Cardiorespiratory Health Effects of Size-Segregated Ambient Particulate Air Pollution and Ozone, PhD Faculty of Medicine University of Kuopio, National Institute of Health and Welfare, Kuopio, Finland, 174 pp., 2009.
Han, Y. M., Cao, J. J., Jin, Z. D., and An, Z. S.: Elemental composition of aerosols in Daihai, a rural area in the front boundary of the summer Asian monsoon, Atmos. Res., 92, 229–235, https://doi.org/10.1016/j.atmosres.2008.10.031, 2009.
Harrison, R. M., Smith, D. J. T., and Luhana, L.: Source Apportionment of Atmospheric Polycyclic Aromatic Hydrocarbons Collected from an Urban Location in Birmingham, UK, Environ. Sci. Technol., 30, 825–832, https://doi.org/10.1021/es950252d, 1996.
Harrison, R. M., Jones, A. M., and Lawrence, R. G.: A pragmatic mass closure model for airborne particulate matter at urban background and roadside sites, Atmos. Environ., 37, 4927–4933, https://doi.org/10.1016/j.atmosenv.2003.08.025, 2003.
He, K., Zhao, Q., Ma, Y., Duan, F., Yang, F., Shi, Z., and Chen, G.: Spatial and seasonal variability of PM2.5 acidity at two Chinese megacities: insights into the formation of secondary inorganic aerosols, Atmos. Chem. Phys., 12, 1377–1395, https://doi.org/10.5194/acp-12-1377-2012, 2012.
Heal, M. R., Hibbs, L. R., Agius, R. M., and Beverland, I. J.: Interpretation of variations in fine, coarse and black smoke particulate matter concentrations in a northern European city, Atmos. Environ., 39, 3711–3718, 2005.
Hellebust, S., Allanic, A., O'Connor, I. P., Wenger, J. C., and Sodeau, J. R.: The use of real-time monitoring data to evaluate major sources of airborne particulate matter, Atmos. Environ., 44, 1116–1125, 2010.
Hellén, H., Hakola, H., and Laurila, T.: Determination of source contributions of NMHCs in Helsinki (60° N, 25° E) using chemical mass balance and the Unmix multivariate receptor models, Atmos. Environ., 37, 1413–1424, https://doi.org/10.1016/S1352-2310(02)01049-X, 2003.
Heo, J.-B., Hopke, P. K., and Yi, S.-M.: Source apportionment of PM2.5 in Seoul, Korea, Atmos. Chem. Phys., 9, 4957–4971, https://doi.org/10.5194/acp-9-4957-2009, 2009.
Ho, K. F., Cao, J. J., Lee, S. C., and Chan, C. K.: Source apportionment of PM2.5 in urban area of Hong Kong, J. Hazard. Mater., 138, 73–85, https://doi.org/10.1016/j.jhazmat.2006.05.047, 2006.
Hopke, P. K. and Song, X.-H.: The chemical mass balance as a multivariate calibration problem, Chemometrics and Intelligent Laboratory Systems, 37, 5–14, 1997.
Hopke, P. K., Ito, K., Mar, T., Christensen, W. F., Eatough, D. J., Henry, R. C., Kim, E., Laden, F., Lall, R., Larson, T. V., Liu, H., Neas, L., Pinto, J., Stolzel, M., Suh, H., Paatero, P., and Thurston, G. D.: PM source apportionment and health effects: 1. Intercomparison of source apportionment results, J. Expo. Sci. Env. Epid., 16, 275–286, https://doi.org/10.1038/sj.jea.7500458, 2006.
Hopke, P. K., Cohen, D. D., Begum, B. A., Biswas, S. K., Ni, B., Pandit, G. G., Santoso, M., Chung, Y.-S., Davy, P., Markwitz, A., Waheed, S., Siddique, N., Santos, F. L., Pabroa, P. C. B., Seneviratne, M. C. S., Wimolwattanapun, W., Bunprapob, S., Vuong, T. B., Duy Hien, P., and Markowicz, A.: Urban air quality in the Asian region, Sci. Total Environ., 404, 103–112, https://doi.org/10.1016/j.scitotenv.2008.05.039, 2008.
Huang, B., Liu, M., Ren, Z., Bi, X., Zhang, G., Sheng, G., and Fu, J.: Chemical composition, diurnal variation and sources of PM2.5 at two industrial sites of South China, Atmospolres, 4, 298–305, https://doi.org/10.5094/APR.2013.033, 2013.
Hyslop, N. P.: Impaired visibility: the air pollution people see, Atmos. Environ., 43, 182–195, https://doi.org/10.1016/j.atmosenv.2008.09.067, 2009.
Jacobson, M. Z.: Control of fossil-fuel particulate black carbon and organic matter, possibly the most effective method of slowing global warming, J. Geophys. Res.-Atmos., 107, 4410, https://doi.org/10.1029/2001JD001376, 2002.
Jiang, S. Y. N., Yang, F., Chan, K. L., and Ning, Z.: Water solubility of metals in coarse PM and PM2.5 in typical urban environment in Hong Kong, Atmos. Pollut. Res., 5, 236–244, https://doi.org/10.5094/APR.2014.029, 2014.
Juneng, L., Latif, M. T., Tangang, F. T., and Mansor, H.: Spatio-temporal characteristics of PM10 concentration across Malaysia, Atmos. Environ., 43, 4584–4594, https://doi.org/10.1016/j.atmosenv.2009.06.018, 2009.
Juneng, L., Latif, M. T., and Tangang, F.: Factors influencing the variations of PM10 aerosol dust in Klang Valley, Malaysia during the summer, Atmos. Environ., 45, 4370–4378, https://doi.org/10.1016/j.atmosenv.2011.05.045, 2011.
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Leetmaa, A., Reynolds, R., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Jenne, R., and Joseph, D.: The NCEP/NCAR 40-Year Reanalysis Project, Bulletin of the American Meteorological Society, 77, 437–471, 1996.
Karthikeyan, S. and Balasubramanian, R.: Determination of water-soluble inorganic and organic species in atmospheric fine particulate matter, Microchem. J., 82, 49–55, https://doi.org/10.1016/j.microc.2005.07.003, 2006.
Katsouyanni, K., Touloumi, G., Spix, C., Schwartz, J., Balducci, F., Medina, S., Rossi, G., Wojtyniak, B., Sunyer, J., Bacharova, L., Schouten, J. P., Ponka, A., and Anderson, H. R.: Short term effects of ambient sulphur dioxide and particulate matter on mortality in 12 European cities: results from time series data from the APHEA project, BMJ, 314, 1658, 1997.
Keywood, M. D., Ayers, G. P., Gras, J. L., Boers, C. P., and Leong: Haze in the Klang Valley of Malaysia, Atmos. Chem. Phys., 3, 591–605, https://doi.org/10.5194/acp-3-591-2003, 2003.
Khan, M. F., Hirano, K., and Masunaga, S.: Quantifying the sources of hazardous elements of suspended particulate matter aerosol collected in Yokohama, Japan, Atmos. Environ., 44, 2646–2657, https://doi.org/10.1016/j.atmosenv.2010.03.040, 2010a.
Khan, M. F., Shirasuna, Y., Hirano, K., and Masunaga, S.: Characterization of PM2.5, PM2.5–10 and PM10 in ambient air, Yokohama, Japan, Atmos. Res., 96, 159–172, https://doi.org/10.1016/j.atmosres.2009.12.009, 2010b.
Khan, M. F., Latif, M. T., Juneng, L., Amil, N., Nadzir, M. S. M., and Syedul Hoque, H. M.: Physicochemical factors and sources of PM10 at residential-urban environment in Kuala Lumpur, J. Air Waste Manage., 65, 958–969, https://doi.org/10.1080/10962247.2015.1042094, 2015a.
Khan, M. F., Latif, M. T., Lim, C. H., Amil, N., Jaafar, S. A., Dominick, D., Mohd Nadzir, M. S., Sahani, M., and Tahir, N. M.: Seasonal effect and source apportionment of polycyclic aromatic hydrocarbons in PM2.5, Atmos. Environ., 106, 178–190, https://doi.org/10.1016/j.atmosenv.2015.01.077, 2015b.
Khan, M. F., Latif, M. T., Saw, W. H., Amil, N., Nadzir, M. S. M., Sahani, M., Tahir, N. M., and Chung, J. X.: Fine particulate matter in the tropical environment: monsoonal effects, source apportionment, and health risk assessment, Atmos. Chem. Phys., 16, 597–617, https://doi.org/10.5194/acp-16-597-2016, 2016.
Kim, E. and Hopke, P. K.: Source characterization of ambient fine particles at multiple sites in the Seattle area, Atmos. Environ., 42, 6047–6056, https://doi.org/10.1016/j.atmosenv.2008.03.032, 2008.
Kim Oanh, N. T., Upadhyay, N., Zhuang, Y. H., Hao, Z. P., Murthy, D. V. S., Lestari, P., Villarin, J. T., Chengchua, K., Co, H. X., Dung, N. T., and Lindgren, E. S.: Particulate air pollution in six Asian cities: Spatial and temporal distributions, and associated sources, Atmos. Environ., 40, 3367–3380, https://doi.org/10.1016/j.atmosenv.2006.01.050, 2006.
Koçak, M., Theodosi, C., Zarmpas, P., Im, U., Bougiatioti, A., Yenigun, O., and Mihalopoulos, N.: Particulate matter (PM10) in Istanbul: Origin, source areas and potential impact on surrounding regions, Atmos. Environ., 45, 6891–6900, https://doi.org/10.1016/j.atmosenv.2010.10.007, 2011.
Kowalczyk, G. S., Gordon, G. E., and Rheingrover, S. W.: Identification of atmospheric particulate sources in Washington, D.C. using chemical element balances, Environ. Sci. Technol., 16, 79–90, https://doi.org/10.1021/es00096a005, 1982.
Krewski, D., Jerrett, M., Burnett, R. T., Ma, R., Hughes, E., Shi, Y., Turner, M. C., Pope III , C. A., Thurston, G., Calle, E. E., Thun, M. J., Beckerman, B., DeLuca, P., Finkelstein, N., Ito, K., Moore, D. K., Newbold, K. B., Ramsay, T., Ross, Z., Shin, H., and Tempalski, B.: Extended follow-up and spatial analysis of the American Cancer Society study linking particulate air pollution and mortality, HEI Research Report 140, Health Effects Institute, Boston, MA, USA, 5–114, 115–136, 2009.
Kuo, Y.-M., Hung, H.-F., and Yang, T.-T.: Chemical Compositions of PM2.5 in Residential Homes of Southern Taiwan, Aerosol Air Qual. Res., 7, 403–416, https://doi.org/10.4209/aaqr.2007.02.0009, 2007.
Laden, F., Neas, L. M., Dockery, D. W., and Schwartz, J.: Association of fine particulate matter from different sources with daily mortality in six US cities, Environ. Health Persp., 108, 941–947, 2000.
Lanki, T., de Hartog, J. J., Heinrich, J., Hoek, G., Janssen, N. A. H., Peters, A., Stölzel, M., Timonen, K. L., Vallius, M., Vanninen, E., and Pekkanen, J.: Can we identify sources of fine particles respnsible for exercise-induced ischemia on days with elevated air pollution? The ULTRA study, Environ. Health Persp., 114, 655–660, 2006.
Lanz, V. A., Prévôt, A. S. H., Alfarra, M. R., Weimer, S., Mohr, C., DeCarlo, P. F., Gianini, M. F. D., Hueglin, C., Schneider, J., Favez, O., D'Anna, B., George, C., and Baltensperger, U.: Characterization of aerosol chemical composition with aerosol mass spectrometry in Central Europe: an overview, Atmos. Chem. Phys., 10, 10453–10471, https://doi.org/10.5194/acp-10-10453-2010, 2010.
Lawson, D. R. and Winchester, J. W.: A standard crustal aerosol as a reference for elemental enrichment factors, Atmos. Environ., 13, 925–930, https://doi.org/10.1016/0004-6981(79)90003-9, 1979.
Lestari, P. and Mauliadi, Y. D.: Source apportionment of particulate matter at urban mixed site in Indonesia using PMF, Atmos. Environ., 43, 1760–1770, https://doi.org/10.1016/j.atmosenv.2008.12.044, 2009.
Louie, P. K. K., Chow, J. C., Chen, L. W. A., Watson, J. G., Leung, G., and Sin, D. W. M.: PM2.5 chemical composition in Hong Kong: urban and regional variations, Sci. Total Environ., 338, 267–281, https://doi.org/10.1016/j.scitotenv.2004.07.021, 2005.
Mallet, M., Dulac, F., Formenti, P., Nabat, P., Sciare, J., Roberts, G., Pelon, J., Ancellet, G., Tanré, D., Parol, F., Denjean, C., Brogniez, G., di Sarra, A., Alados-Arboledas, L., Arndt, J., Auriol, F., Blarel, L., Bourrianne, T., Chazette, P., Chevaillier, S., Claeys, M., D'Anna, B., Derimian, Y., Desboeufs, K., Di Iorio, T., Doussin, J.-F., Durand, P., Féron, A., Freney, E., Gaimoz, C., Goloub, P., Gómez-Amo, J. L., Granados-Muñoz, M. J., Grand, N., Hamonou, E., Jankowiak, I., Jeannot, M., Léon, J.-F., Maillé, M., Mailler, S., Meloni, D., Menut, L., Momboisse, G., Nicolas, J., Podvin, T., Pont, V., Rea, G., Renard, J.-B., Roblou, L., Schepanski, K., Schwarzenboeck, A., Sellegri, K., Sicard, M., Solmon, F., Somot, S., Torres, B., Totems, J., Triquet, S., Verdier, N., Verwaerde, C., Waquet, F., Wenger, J., and Zapf, P.: Overview of the Chemistry-Aerosol Mediterranean Experiment/Aerosol Direct Radiative Forcing on the Mediterranean Climate (ChArMEx/ADRIMED) summer 2013 campaign, Atmos. Chem. Phys., 16, 455–504, https://doi.org/10.5194/acp-16-455-2016, 2016.
Megaritis, A. G., Fountoukis, C., Charalampidis, P. E., Denier van der Gon, H. A. C., Pilinis, C., and Pandis, S. N.: Linking climate and air quality over Europe: effects of meteorology on PM2.5 concentrations, Atmos. Chem. Phys., 14, 10283–10298, https://doi.org/10.5194/acp-14-10283-2014, 2014.
METMalaysia: General Climate of Malaysia: http://www.met.gov.my/en/web/metmalaysia/education/climate/generalclimateofmalaysia (last access: 1 July 2015), 2013.
Meyer, N. K.: Particulate, black carbon and organic emissions from small-scale residential wood combustion appliances in Switzerland, Biomass. Bioenerg., 36, 31–42, https://doi.org/10.1016/j.biombioe.2011.09.023, 2012.
Ministry of Works: Road Traffic Volume Malaysia Malaysian Institute of Road Safety Research (MIROS), Selangor, Malaysia, 2011.
Moldanová, J., Fridell, E., Winnes, H., Holmin-Fridell, S., Boman, J., Jedynska, A., Tishkova, V., Demirdjian, B., Joulie, S., Bladt, H., Ivleva, N. P., and Niessner, R.: Physical and chemical characterisation of PM emissions from two ships operating in European Emission Control Areas, Atmos. Meas. Tech., 6, 3577–3596, https://doi.org/10.5194/amt-6-3577-2013, 2013.
Mooibroek, D., Schaap, M., Weijers, E. P., and Hoogerbrugge, R.: Source apportionment and spatial variability of PM2.5 using measurements at five sites in the Netherlands, Atmos. Environ., 45, 4180–4191, https://doi.org/10.1016/j.atmosenv.2011.05.017, 2011.
Mueller, D., Uibel, S., Takemura, M., Klingelhoefer, D., and Groneberg, D.: Ships, ports and particulate air pollution – an analysis of recent studies, J. Occup. Med. Toxicol., 6, 1–6, https://doi.org/10.1186/1745-6673-6-31, 2011.
Mustaffa, N. I., Latif, M. T., Ali, M. M., and Khan, M. F.: Source apportionment of surfactants in marine aerosols at different locations along the Malacca Straits, Environ. Sci. Pollut. Res., 21, 6590–6602, https://doi.org/10.1007/s11356-014-2562-z, 2014.
NOAA: NCEP/NCAR Reanalysis 1: Pressure: http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.pressure.html, last access: 3 March 2015.
Norela, S., Saidah, M. S., and Mastura, M.: Chemical composition of the haze in Malaysia 2005, Atmos. Environ., https://doi.org/10.1016/j.atmosenv.2013.05.024, 2013.
Paatero, P. and Tapper, U.: Analysis of different modes of factor analysis as least squares fit problems, Chemometer. Intell. Lab., 18, 183–194, https://doi.org/10.1016/0169-7439(93)80055-M, 1993.
Paatero, P. and Tapper, U.: Positive Matrix Factorization – A Nonnegative Factor Model With Optimal Utilization of Error – Estimates of Data Values, Environmetrics, 5, 111–126, https://doi.org/10.1002/env.3170050203, 1994.
Paatero, P., Eberly, S., Brown, S. G., and Norris, G. A.: Methods for estimating uncertainty in factor analytic solutions, Atmos. Meas. Tech., 7, 781–797, https://doi.org/10.5194/amt-7-781-2014, 2014.
Pachauri, T., Satsangi, A., Singla, V., Lakhani, A., and Kumari, K. M.: Characteristics and Sources of Carbonaceous Aerosols in PM2.5 during Wintertime in Agra, India, Aerosol Air Qual. Res., 13, 977–991, 2013.
Park, S. S., Kim, Y. J., and Fung, K.: PM2.5 carbon measurements in two urban areas: Seoul and Kwangju, Korea, Atmos. Environ., 36, 1287–1297, 2002.
Pastuszka, J., Rogula-Kozlowska, W., and Zajusz-Zubek, E.: Characterization of PM10 and PM2.5 and associated heavy metals at the crossroads and urban background site in Zabrze, Upper Silesia, Poland, during the smog episodes, Environ. Monit. Assess., 168, 613–627, https://doi.org/10.1007/s10661-009-1138-8, 2010.
Pey, J., Querol, X., Alastuey, A., Rodríguez, S., Putaud, J. P., and Van Dingenen, R.: Source apportionment of urban fine and ultra-fine particle number concentration in a Western Mediterranean city, Atmos. Environ., 43, 4407–4415, https://doi.org/10.1016/j.atmosenv.2009.05.024, 2009.
Pope III, C. A.: Epidemiology of fine particulate air pollution and human health: Biologic mechanisms and who's at risk?, Environ. Health Persp., 108, 713–723, 2000.
Pope III, C. A. and Dockery, D. W.: Health effects of fine particulate air pollution: Lines that connect, J. Air Waste Manage., 56, 709–742, 2006.
Querol, X., Viana, M., Alastuey, A., Amato, F., Moreno, T., Castillo, S., Pey, J., de la Rosa, J., Sánchez de la Campa, A., Artíñano, B., Salvador, P., García Dos Santos, S., Fernández-Patier, R., Moreno-Grau, S., Negral, L., Minguillón, M. C., Monfort, E., Gil, J. I., Inza, A., Ortega, L. A., Santamaría, J. M., and Zabalza, J.: Source origin of trace elements in PM from regional background, urban and industrial sites of Spain, Atmos. Environ., 41, 7219–7231, https://doi.org/10.1016/j.atmosenv.2007.05.022, 2007.
Querol, X., Pey, J., Minguillón, M. C., Pérez, N., Alastuey, A., Viana, M., Moreno, T., Bernabé, R. M., Blanco, S., Cárdenas, B., Vega, E., Sosa, G., Escalona, S., Ruiz, H., and Artíñano, B.: PM speciation and sources in Mexico during the MILAGRO-2006 Campaign, Atmos. Chem. Phys., 8, 111–128, https://doi.org/10.5194/acp-8-111-2008, 2008.
Rahman, S. A., Hamzah, M. S., Wood, A. K., Elias, M. S., Adullah Salim, N. A., and Sanuri, E.: Sources apportionment of fine and coarse aerosol in Klang Valley, Kuala Lumpur using positive matrix factorization, Atmos. Pollut. Res., 2, 197–206, https://doi.org/10.5094/APR.2011.025, 2011.
Rashid, M. and Griffiths, R. F.: Trends of atmospheric fine and coarse particulates in Kuala Lumpur, Malaysia (1986–1990), Environ. Technol., 16, 25–34, 1995.
Reche, C., Viana, M., Amato, F., Alastuey, A., Moreno, T., Hillamo, R., Teinilä, K., Saarnio, K., Seco, R., Peñuelas, J., Mohr, C., Prévôt, A. S. H., and Querol, X.: Biomass burning contributions to urban aerosols in a coastal Mediterranean City, Sci. Total Environ., 427, 175–190, https://doi.org/10.1016/j.scitotenv.2012.04.012, 2012.
Reid, J. S., Hyer, E. J., Johnson, R. S., Holben, B. N., Yokelson, R. J., Zhang, J., Campbell, J. R., Christopher, S. A., Di Girolamo, L., Giglio, L., Holz, R. E., Kearney, C., Miettinen, J., Reid, E. A., Turk, F. J., Wang, J., Xian, P., Zhao, G., Balasubramanian, R., Chew, B. N., Janjai, S., Lagrosas, N., Lestari, P., Lin, N.-H., Mahmud, M., Nguyen, A. X., Norris, B., Oanh, N. T. K., Oo, M., Salinas, S. V., Welton, E. J., and Liew, S. C.: Observing and understanding the Southeast Asian aerosol system by remote sensing: An initial review and analysis for the Seven Southeast Asian Studies (7SEAS) program, Atmos. Res., 122, 403–468, https://doi.org/10.1016/j.atmosres.2012.06.005, 2013.
Reisen, F., Meyer, C. P., and Keywood, M. D.: Impact of biomass burning sources on seasonal aerosol air quality, Atmos. Environ., 67, 437–447, https://doi.org/10.1016/j.atmosenv.2012.11.004, 2013.
Remoundaki, E., Kassomenos, P., Mantas, E., Mihalopoulos, N., and Tsezos, M.: Composition and Mass Closure of PM2.5 in Urban Environment (Athens, Greece), Aerosol Air Qual. Res., 13, 72–82, https://doi.org/10.4209/aaqr.2012.03.0054, 2013.
Rengarajan, R., Sudheer, A. K., and Sarin, M. M.: Wintertime PM2.5 and PM10 carbonaceous and inorganic constituents from urban site in western India, Atmos. Res., 102, 420–431, https://doi.org/10.1016/j.atmosres.2011.09.005, 2011.
Richard, A., Gianini, M. F. D., Mohr, C., Furger, M., Bukowiecki, N., Minguillón, M. C., Lienemann, P., Flechsig, U., Appel, K., DeCarlo, P. F., Heringa, M. F., Chirico, R., Baltensperger, U., and Prévôt, A. S. H.: Source apportionment of size and time resolved trace elements and organic aerosols from an urban courtyard site in Switzerland, Atmos. Chem. Phys., 11, 8945–8963, https://doi.org/10.5194/acp-11-8945-2011, 2011.
Richmond-Bryant, J., Saganich, C., Bukiewicz, L., and Kalin, R.: Associations of PM2.5 and black carbon concentrations with traffic, idling, background pollution, and meteorology during school dismissals, Sci. Total Environ., 407, 3357–3364, https://doi.org/10.1016/j.scitotenv.2009.01.046, 2009.
Ross, Z., Ito, K., Johnson, S., Yee, M., Pezeshki, G., Clougherty, J. E., Savitz, D., and Matte, T.: Spatial and temporal estimation of air pollutants in New York City: exposure assignment for use in a birth outcomes study, Environ. Health, 12, 1–13, https://doi.org/10.1186/1476-069x-12-51, 2013.
Ruuskanen, J., Tuch, T., Ten Brink, H., Peters, A., Khlystov, A., Mirme, A., Kos, G. P. A., Brunekreef, B., Wichmann, H. E., Buzorius, G., Vallius, M., Kreyling, W. G., and Pekkanen, J.: Concentrations of ultrafine, fine and PM2.5 particles in three European cities, Atmos. Environ., 35, 3729–3738, 2001.
Sánchez de la Campa, A. M., de la Rosa, J. D., Sánchez-Rodas, D., Oliveira, V., Alastuey, A., Querol, X., and Gómez Ariza, J. L.: Arsenic speciation study of PM2.5 in an urban area near a copper smelter, Atmos. Environ., 42, 6487–6495, https://doi.org/10.1016/j.atmosenv.2008.04.016, 2008.
Santoso, M., Hopke, P. K., Hidayat, A., and Diah Dwiana, L.: Sources identification of the atmospheric aerosol at urban and suburban sites in Indonesia by positive matrix factorization, Sci. Total Environ., 397, 229–237, https://doi.org/10.1016/j.scitotenv.2008.01.057, 2008.
Schwartz, J., Dockery, D. W., and Neas, L. M.: Is daily mortality associated specifically with fine particles?, J. Air Waste Manage., 46, 927–939, 1996.
Song, C. H. and Carmichael, G. R.: The aging process of naturally emitted aerosol (sea-salt and mineral aerosol) during long range transport, Atmos. Environ., 33, 2203–2218, https://doi.org/10.1016/S1352-2310(98)00301-X, 1999.
Song, Y., Xie, S., Zhang, Y., Zeng, L., Salmon, L. G., and Zheng, M.: Source apportionment of PM2.5 in Beijing using principal component analysis/absolute principal component scores and UNMIX, Sci. Total Environ., 372, 278–286, https://doi.org/10.1016/j.scitotenv.2006.08.041, 2006.
Speer, R. E., Barnes, H. M., and Brown, R.: An instrument for measuring the liquid water content of aerosols, Aerosol Sci. Technol., 27, 50–61, 1997.
Squizzato, S., Masiol, M., Brunelli, A., Pistollato, S., Tarabotti, E., Rampazzo, G., and Pavoni, B.: Factors determining the formation of secondary inorganic aerosol: a case study in the Po Valley (Italy), Atmos. Chem. Phys., 13, 1927–1939, https://doi.org/10.5194/acp-13-1927-2013, 2013.
Srimuruganandam, B. and Shiva Nagendra, S. M.: Source characterization of PM10 and PM2.5 mass using a chemical mass balance model at urban roadside, Sci. Total Environ., 433, 8–19, https://doi.org/10.1016/j.scitotenv.2012.05.082, 2012a.
Srimuruganandam, B. and Shiva Nagendra, S. M.: Application of positive matrix factorization in characterization of PM10 and PM2.5 emission sources at urban roadside, Chemosphere, 88, 120–130, https://doi.org/10.1016/j.chemosphere.2012.02.083, 2012b.
Stortini, A. M., Freda, A., Cesari, D., Cairns, W. R. L., Contini, D., Barbante, C., Prodi, F., Cescon, P., and Gambaro, A.: An evaluation of the PM2.5 trace elemental composition in the Venice Lagoon area and an analysis of the possible sources, Atmos. Environ., 43, 6296–6304, https://doi.org/10.1016/j.atmosenv.2009.09.033, 2009.
Tagaris, E., Liao, K.-J., DeLucia, A. J., Deck, L., Amar, P., and Russell, A. G.: Potential Impact of Climate Change on Air Pollution-Related Human Health Effects, Environ. Sci. Technol., 43, 4979–4988, https://doi.org/10.1021/es803650w, 2009.
Tahir, N. M., Koh, M., and Suratman, S.: PM2.5 and associated ionic species in a sub-urban coastal area of Kuala Terengganu, Southern South China Sea (Malaysia), Sains Malays., 42, 1065–1072, 2013a.
Tahir, N. M., Suratman, S., Fong, F. T., Hamzah, M. S., and Latif, M. T.: Temporal Distribution and Chemical Characterization of Atmospheric Particulate Matter in the Eastern Coast of Peninsular Malaysia, Aerosol Air Qual. Res., 13, 584–595, https://doi.org/10.4209/aaqr.2012.08.0216, 2013b.
Tai, A. P. K., Mickley, L. J., and Jacob, D. J.: Correlations between fine particulate matter (PM2.5) and meteorological variables in the United States: Implications for the sensitivity of PM2.5 to climate change, Atmos. Environ., 44, 3976–3984, https://doi.org/10.1016/j.atmosenv.2010.06.060, 2010.
Tai, A. P. K., Mickley, L. J., Jacob, D. J., Leibensperger, E. M., Zhang, L., Fisher, J. A., and Pye, H. O. T.: Meteorological modes of variability for fine particulate matter (PM2.5) air quality in the United States: implications for PM2.5 sensitivity to climate change, Atmos. Chem. Phys., 12, 3131–3145, https://doi.org/10.5194/acp-12-3131-2012, 2012.
Thurston, G. D., Ito, K., and Lall, R.: A source apportionment of US fine particulate matter air pollution, Atmos. Environ., 45, 3924–3936, https://doi.org/10.1016/j.atmosenv.2011.04.070, 2011.
USEPA: National Ambient Air Quality Standards (NAAQS): http://www.epa.gov/air/criteria.html, last access: 30 April 2015.
Vallius, M., Ruuskanen, J., and Pekkanen, J.: Comparison of multivariate source apportionment of urban PM2. 5 with chemical mass closure, Boreal Environ. Res., 13, 347–358, 2008.
Vecchi, R., Chiari, M., D'Alessandro, A., Fermo, P., Lucarelli, F., Mazzei, F., Nava, S., Piazzalunga, A., Prati, P., Silvani, F., and Valli, G.: A mass closure and PMF source apportionment study on the sub-micron sized aerosol fraction at urban sites in Italy, Atmos. Environ., 42, 2240–2253, 2008.
Viana, M., Kuhlbusch, T. A. J., Querol, X., Alastuey, A., Harrison, R. M., Hopke, P. K., Winiwarter, W., Vallius, M., Szidat, S., Prévôt, A. S. H., Hueglin, C., Bloemen, H., Wåhlin, P., Vecchi, R., Miranda, A. I., Kasper-Giebl, A., Maenhaut, W., and Hitzenberger, R.: Source apportionment of particulate matter in Europe: A review of methods and results, J. Aerosol Sci., 39, 827–849, https://doi.org/10.1016/j.jaerosci.2008.05.007, 2008.
Vieno, M., Heal, M. R., Hallsworth, S., Famulari, D., Doherty, R. M., Dore, A. J., Tang, Y. S., Braban, C. F., Leaver, D., Sutton, M. A., and Reis, S.: The role of long-range transport and domestic emissions in determining atmospheric secondary inorganic particle concentrations across the UK, Atmos. Chem. Phys., 14, 8435–8447, https://doi.org/10.5194/acp-14-8435-2014, 2014.
Viidanoja, J., Sillanpää, M., Laakia, J., Kerminen, V.-M., Hillamo, R., Aarnio, P., and Koskentalo, T.: Organic and black carbon in PM2.5 and PM10: 1 year of data from an urban site in Helsinki, Finland, Atmos. Environ., 36, 3183–3193, https://doi.org/10.1016/S1352-2310(02)00205-4, 2002.
Wagstrom, K. M. and Pandis, S. N.: Source–receptor relationships for fine particulate matter concentrations in the Eastern United States, Atmos. Environ., 45, 347–356, https://doi.org/10.1016/j.atmosenv.2010.10.019, 2011.
Wahid, N. B. A., Latif, M. T., and Suratman, S.: Composition and source apportionment of surfactants in atmospheric aerosols of urban and semi-urban areas in Malaysia, Chemosphere, 91, 1508–1516, https://doi.org/10.1016/j.chemosphere.2012.12.029, 2013.
Wåhlin, P., Berkowicz, R., and Palmgren, F.: Characterisation of traffic-generated particulate matter in Copenhagen, Atmos. Environ., 40, 2151–2159, https://doi.org/10.1016/j.atmosenv.2005.11.049, 2006.
Wang, Y., Zhuang, G., Sun, Y., and An, Z.: Water-soluble part of the aerosol in the dust storm season-evidence of the mixing between mineral and pollution aerosols, Atmos. Environ., 39, 7020–7029, https://doi.org/10.1016/j.atmosenv.2005.08.005, 2005.
Watson, J. G.: Visibility: Science and Regulation, J. Air Waste Manage., 52, 628–713, 2002.
Watson, J. G. and Chow, J. C.: Source characterization of major emission sources in the Imperial and Mexicali Valleys along the US/Mexico border, Sci. Total Environ., 276, 33–47, 2001.
Watson, J. G., Zhu, T., Chow, J. C., Engelbrecht, J., Fujita, E. M., and Wilson, W. E.: Receptor modeling application framework for particle source apportionment, Chemosphere, 49, 1093–1136, 2002.
WHO: WHO Air Quality Guidelines Global Updates 2005: Particulate matter, ozone, nitrogen dioxide and sulfur dioxide, Copenhagen, Denmark, 2006.
WHO: Health Effects of Particulate Matter, WHO Regional Office for Europe, UN City, Marmorvej 51, 2100 Copenhagen, Denmark, 2013.
Wiwolwattanapun, W., Hopke, P. K., and Pongkiatkul, P.: Source Apportionment and Potential Source Locations of PM2.5 and PM2.5-PM10 at Residential Sites in Metropolitan Bangkok, APR, 2, 172–181, https://doi.org/10.5094/APR.2011.022, 2011.
Ye, B., Ji, X., Yang, H., Yao, X., Chan, C. K., Cadle, S. H., Chan, T., and Mulawa, P. A.: Concentration and chemical composition of PM2.5 in Shanghai for a 1-year period, Atmos. Environ., 37, 499–510, 2003.
Yin, J., Allen, A. G., Harrison, R. M., Jennings, S. G., Wright, E., Fitzpatrick, M., Healy, T., Barry, E., Ceburnis, D., and McCusker, D.: Major component composition of urban PM10 and PM2.5 in Ireland, Atmos. Res., 78, 149–165, https://doi.org/10.1016/j.atmosres.2005.03.006, 2005.
Yin, J., Harrison, R. M., Chen, Q., Rutter, A., and Schauer, J. J.: Source apportionment of fine particles at urban background and rural sites in the UK atmosphere, Atmos. Environ., 44, 841–851, https://doi.org/10.1016/j.atmosenv.2009.11.026, 2010.
Yu, L., Wang, G., Zhang, R., Zhang, L., Song, Y., Wu, B., Li, X., An, K., and Chu, J.: Characterization and source apportionment of PM2.5 in an urban environment in Beijing, Aerosol Air Qual. Res., 13, 574–583, 2013.
Zaki, N. S., Barbooti, M. M., Baha-Uddin, S. S., and Hassan, E. B.: Determination of Trace Metals and Their Distribution in Heavy Crude Oil Distillates (350 °C+) by Atomic Absorption Spectrophotometry, Appl. Spectrosc., 43, 1257–1259, 1989.
Zhang, R., Jing, J., Tao, J., Hsu, S.-C., Wang, G., Cao, J., Lee, C. S. L., Zhu, L., Chen, Z., Zhao, Y., and Shen, Z.: Chemical characterization and source apportionment of PM2.5 in Beijing: seasonal perspective, Atmos. Chem. Phys., 13, 7053–7074, https://doi.org/10.5194/acp-13-7053-2013, 2013.
Zhang, T., Cao, J. J., Tie, X. X., Shen, Z. X., Liu, S. X., Ding, H., Han, Y. M., Wang, G. H., Ho, K. F., Qiang, J., and Li, W. T.: Water-soluble ions in atmospheric aerosols measured in Xi'an, China: Seasonal variations and sources, Atmos. Res., 102, 110–119, https://doi.org/10.1016/j.atmosres.2011.06.014, 2011.
Zhao, M., Zhang, Y., Ma, W., Fu, Q., Yang, X., Li, C., Zhou, B., Yu, Q., and Chen, L.: Characteristics and ship traffic source identification of air pollutants in China's largest port, Atmos. Environ., 64, 277–286, https://doi.org/10.1016/j.atmosenv.2012.10.007, 2013.
Zheng, J., He, M., Shen, X., Yin, S., and Yuan, Z.: High resolution of black carbon and organic carbon emissions in the Pearl River Delta region, China, Sci. Total Environ., 438, 189–200, https://doi.org/10.1016/j.scitotenv.2012.08.068, 2012.
Zheng, M., Salmon, L. G., Schauer, J. J., Zeng, L., Kiang, C. S., Zhang, Y., and Cassa, G. R.: Seasonal trends in PM2.5 source contributions in Beijing, China, Atmos. Environ., 39, 3967–3976, https://doi.org/10.1016/j.atmosenv.2005.03.036, 2005.
Short summary
This study investigates the PM2.5 variability in the Klang Valley urban-industrial environment. Source apportionment analysis reveals two major contributors of PM2.5 in the study area: secondary inorganic aerosols and biomass burning. The chemical constituents and sources of PM2.5 in this study area were greatly influenced and characterised by meteorological and gaseous parameters which largely vary with season.
This study investigates the PM2.5 variability in the Klang Valley urban-industrial environment....
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