Articles | Volume 22, issue 17
https://doi.org/10.5194/acp-22-11239-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-11239-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
02 Sep 2022
Research article |
| 02 Sep 2022
| 02 Sep 2022
Chemical evolution of secondary organic aerosol tracers during high-PM2.5 episodes at a suburban site in Hong Kong over 4 months of continuous measurement
Qiongqiong Wang
Department of Chemistry, The Hong Kong University of Science and
Technology, Hong Kong SAR, China
Shan Wang
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
Yuk Ying Cheng
Department of Chemistry, The Hong Kong University of Science and
Technology, Hong Kong SAR, China
Hanzhe Chen
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
Zijing Zhang
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
Jinjian Li
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
Department of Chemistry, The Hong Kong University of Science and
Technology, Hong Kong SAR, China
Division of Environment and Sustainability, The Hong Kong University
of Science and Technology, Hong Kong SAR, China
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Volatile organic compounds (VOCs) affect ozone formation and air quality. However, our understanding is limited due to insufficient measurements, especially for oxygenated VOCs. This study combines land, ship, and satellite data in Hong Kong, showing that oxygenated VOCs make up a significant portion of total VOCs. Despite their importance, many are underestimated in current models. These findings highlight the need to improve VOC representation in models to enhance air quality management.
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Atmospheric particles over the ocean contain organic nitrogen, affecting climate and ecosystems. This first pole-to-pole study of marine air reveals a strong latitudinal divide, with higher concentrations in the polluted Northern Hemisphere. A key discovery is that air influenced by Antarctic sea ice is enriched in organic nitrogen, revealing a major natural source. Our new dataset improves climate models by clarifying how human emissions and natural processes shape the atmosphere.
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Anhydro-saccharides are key organic markers for biomass burning, but their decay rates and driving factors in real ambient environments remain unclear. This study conducted an online field measurement of PM₂.₅-bound saccharides in three eastern Chinese cities. Daytime levoglucosan decay rates were calculated, and the driving factors were investigated using a machine learning model. Findings of this study offers a strong scientific basis to support air pollution management.
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Organosulfates (OSs) are an unrecognized and potentially important component in marine organic aerosols. In this study, we quantified and characterized the OSs over East Asian marginal seas. The chemical nature and spatiotemporal distribution of OSs were modified by the joint influence of marine emissions and transported terrestrial pollutants. The results highlight the vital roles of OSs in shaping organic aerosol formation and sulfur cycle during summer in the marine boundary layer.
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Atmos. Chem. Phys., 25, 12569–12584, https://doi.org/10.5194/acp-25-12569-2025, https://doi.org/10.5194/acp-25-12569-2025, 2025
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Aqueous-phase •OH oxidation can potentially act as an important atmospheric sink for α-pinene-derived organosulfates (OSs). Such oxidation can also generate a variety of new OS products, and can be as a potential source for some atmospheric OSs with previously unknown origins.
Xu Yu, Min Zhou, Shuhui Zhu, Liping Qiao, Jinjian Li, Yingge Ma, Zijing Zhang, Kezheng Liao, Hongli Wang, and Jian Zhen Yu
Atmos. Chem. Phys., 25, 9061–9074, https://doi.org/10.5194/acp-25-9061-2025, https://doi.org/10.5194/acp-25-9061-2025, 2025
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Ge Yu, Yueya Wang, Zhe Wang, and Xiaoming Shi
Atmos. Chem. Phys., 25, 7527–7542, https://doi.org/10.5194/acp-25-7527-2025, https://doi.org/10.5194/acp-25-7527-2025, 2025
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Studying the cloud-forming capacity of aerosols is crucial in climate research. The PartMC model can provide detailed particle information and help these studies. This model is integrated with the ideal meteorological Cloud Model 1 (CM1) to simulate the aerosols at cloud-forming locations. Significant changes are revealed in the hygroscopicity distribution of aerosols within ascending air parcels. Additionally, different ascent times also affect aerosol aging processes.
Xiao-Bing Li, Bin Yuan, Yibo Huangfu, Suxia Yang, Xin Song, Jipeng Qi, Xianjun He, Sihang Wang, Yubin Chen, Qing Yang, Yongxin Song, Yuwen Peng, Guiqian Tang, Jian Gao, Dasa Gu, and Min Shao
Atmos. Chem. Phys., 25, 2459–2472, https://doi.org/10.5194/acp-25-2459-2025, https://doi.org/10.5194/acp-25-2459-2025, 2025
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Online vertical gradient measurements of volatile organic compounds (VOCs), ozone, and NOx were conducted based on a 325 m tall tower in urban Beijing. Vertical changes in the concentrations, compositions, key drivers, and environmental impacts of VOCs were analyzed in this study. We find that VOC species display differentiated vertical variation patterns and distinct roles in contributing to photochemical ozone formation with increasing height in the urban planetary boundary layer.
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Atmos. Chem. Phys., 24, 11045–11061, https://doi.org/10.5194/acp-24-11045-2024, https://doi.org/10.5194/acp-24-11045-2024, 2024
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Yifan Jiang, Men Xia, Zhe Wang, Penggang Zheng, Yi Chen, and Tao Wang
Atmos. Chem. Phys., 23, 14813–14828, https://doi.org/10.5194/acp-23-14813-2023, https://doi.org/10.5194/acp-23-14813-2023, 2023
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This study provides the first estimate of high rates of formic acid (HCOOH) production from the photochemical aging of real ambient particles and demonstrates the potential importance of this pathway in the formation of HCOOH under ambient conditions. Incorporating this pathway significantly improved the performance of a widely used chemical model. Our solution irradiation experiments demonstrated the importance of nitrate photolysis in HCOOH production via the production of oxidants.
Ting Yang, Yu Xu, Qing Ye, Yi-Jia Ma, Yu-Chen Wang, Jian-Zhen Yu, Yu-Sen Duan, Chen-Xi Li, Hong-Wei Xiao, Zi-Yue Li, Yue Zhao, and Hua-Yun Xiao
Atmos. Chem. Phys., 23, 13433–13450, https://doi.org/10.5194/acp-23-13433-2023, https://doi.org/10.5194/acp-23-13433-2023, 2023
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In this study, 130 OS species were quantified in ambient fine particulate matter (PM2.5) collected in urban and suburban Shanghai (East China) in the summer of 2021. The daytime OS formation was concretized based on the interactions among OSs, ultraviolet (UV), ozone (O3), and sulfate. Our finding provides field evidence for the influence of photochemical process and anthropogenic sulfate on OS formation and has important implications for the mitigation of organic particulate pollution.
Eliane Gomes Alves, Raoni Aquino Santana, Cléo Quaresma Dias-Júnior, Santiago Botía, Tyeen Taylor, Ana Maria Yáñez-Serrano, Jürgen Kesselmeier, Efstratios Bourtsoukidis, Jonathan Williams, Pedro Ivo Lembo Silveira de Assis, Giordane Martins, Rodrigo de Souza, Sérgio Duvoisin Júnior, Alex Guenther, Dasa Gu, Anywhere Tsokankunku, Matthias Sörgel, Bruce Nelson, Davieliton Pinto, Shujiro Komiya, Diogo Martins Rosa, Bettina Weber, Cybelli Barbosa, Michelle Robin, Kenneth J. Feeley, Alvaro Duque, Viviana Londoño Lemos, Maria Paula Contreras, Alvaro Idarraga, Norberto López, Chad Husby, Brett Jestrow, and Iván Mauricio Cely Toro
Atmos. Chem. Phys., 23, 8149–8168, https://doi.org/10.5194/acp-23-8149-2023, https://doi.org/10.5194/acp-23-8149-2023, 2023
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Isoprene is emitted mainly by plants and can influence atmospheric chemistry and air quality. But, there are uncertainties in model emission estimates and follow-up atmospheric processes. In our study, with long-term observational datasets of isoprene and biological and environmental factors from central Amazonia, we show that isoprene emission estimates could be improved when biological processes were mechanistically incorporated into the model.
Shuhui Zhu, Min Zhou, Liping Qiao, Dan Dan Huang, Qiongqiong Wang, Shan Wang, Yaqin Gao, Shengao Jing, Qian Wang, Hongli Wang, Changhong Chen, Cheng Huang, and Jian Zhen Yu
Atmos. Chem. Phys., 23, 7551–7568, https://doi.org/10.5194/acp-23-7551-2023, https://doi.org/10.5194/acp-23-7551-2023, 2023
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Organic aerosol (OA) is increasingly important in urban PM2.5 pollution as inorganic ions are becoming lower. We investigated the chemical characteristics of OA during nine episodes in Shanghai. The availability of bi-hourly measured molecular markers revealed that the control of local urban sources such as vehicular and cooking emissions lessened the severity of local episodes. Regional control of precursors and biomass burning would reduce PM2.5 episodes influenced by regional transport.
Zhouxing Zou, Qianjie Chen, Men Xia, Qi Yuan, Yi Chen, Yanan Wang, Enyu Xiong, Zhe Wang, and Tao Wang
Atmos. Chem. Phys., 23, 7057–7074, https://doi.org/10.5194/acp-23-7057-2023, https://doi.org/10.5194/acp-23-7057-2023, 2023
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We present OH observation and model simulation results at a coastal site in Hong Kong. The model predicted the OH concentration under high-NOx well but overpredicted it under low-NOx conditions. This implies an insufficient understanding of OH chemistry under low-NOx conditions. We show evidence of missing OH sinks as a possible cause of the overprediction.
Rui Li, Kun Zhang, Qing Li, Liumei Yang, Shunyao Wang, Zhiqiang Liu, Xiaojuan Zhang, Hui Chen, Yanan Yi, Jialiang Feng, Qiongqiong Wang, Ling Huang, Wu Wang, Yangjun Wang, Jian Zhen Yu, and Li Li
Atmos. Chem. Phys., 23, 3065–3081, https://doi.org/10.5194/acp-23-3065-2023, https://doi.org/10.5194/acp-23-3065-2023, 2023
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Molecular markers in organic aerosol (OA) provide specific source information on PM2.5, and the contribution of cooking emissions to OA is significant, especially in urban environments. This study investigates the variation in concentrations and oxidative degradation of fatty acids and corresponding oxidation products in ambient air, which can be a guide for the refinement of aerosol source apportionment and provide scientific support for the development of emission source control policies.
Wing Sze Chow, Kezheng Liao, X. H. Hilda Huang, Ka Fung Leung, Alexis K. H. Lau, and Jian Zhen Yu
Atmos. Chem. Phys., 22, 11557–11577, https://doi.org/10.5194/acp-22-11557-2022, https://doi.org/10.5194/acp-22-11557-2022, 2022
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Long-term monitoring data of PM2.5 chemical composition provide essential information for evaluation and planning of control measures. Here we present a 10-year (2008–2017) time series of PM2.5, its major components, and select source markers in an urban site in Hong Kong. The dataset verified the success of local vehicular emission control measures as well as reduction of sulfate and regional sources such as industrial and coal combustion and crop residue burning emissions over the decade.
Yishuo Guo, Chao Yan, Yuliang Liu, Xiaohui Qiao, Feixue Zheng, Ying Zhang, Ying Zhou, Chang Li, Xiaolong Fan, Zhuohui Lin, Zemin Feng, Yusheng Zhang, Penggang Zheng, Linhui Tian, Wei Nie, Zhe Wang, Dandan Huang, Kaspar R. Daellenbach, Lei Yao, Lubna Dada, Federico Bianchi, Jingkun Jiang, Yongchun Liu, Veli-Matti Kerminen, and Markku Kulmala
Atmos. Chem. Phys., 22, 10077–10097, https://doi.org/10.5194/acp-22-10077-2022, https://doi.org/10.5194/acp-22-10077-2022, 2022
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Gaseous oxygenated organic molecules (OOMs) are able to form atmospheric aerosols, which will impact on human health and climate change. Here, we find that OOMs in urban Beijing are dominated by anthropogenic sources, i.e. aromatic (29 %–41 %) and aliphatic (26 %–41 %) OOMs. They are also the main contributors to the condensational growth of secondary organic aerosols (SOAs). Therefore, the restriction on anthropogenic VOCs is crucial for the reduction of SOAs and haze formation.
Rongshuang Xu, Sze In Madeleine Ng, Wing Sze Chow, Yee Ka Wong, Yuchen Wang, Donger Lai, Zhongping Yao, Pui-Kin So, Jian Zhen Yu, and Man Nin Chan
Atmos. Chem. Phys., 22, 5685–5700, https://doi.org/10.5194/acp-22-5685-2022, https://doi.org/10.5194/acp-22-5685-2022, 2022
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To date, while over a hundred organosulfates (OSs) have been detected in atmospheric aerosols, many of them are still unidentified, with unknown precursors and formation processes. We found the heterogeneous OH oxidation of an α-pinene-derived organosulfate (C10H17O5SNa, αpOS-249, αpOS-249) can proceed at an efficient rate and transform into more oxygenated OSs, which have been commonly detected in atmospheric aerosols and α-pinene-derived SOA in chamber studies.
Yee Ka Wong, Kin Man Liu, Claisen Yeung, Kenneth K. M. Leung, and Jian Zhen Yu
Atmos. Chem. Phys., 22, 5017–5031, https://doi.org/10.5194/acp-22-5017-2022, https://doi.org/10.5194/acp-22-5017-2022, 2022
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Coarse particulate matter (PM) has been shown to cause adverse health impacts, but compared to PM2.5, the source of coarse PM is less studied through field measurements. We collected chemical composition data for coarse PM in Hong Kong for a 1-year period. Using statistical models, we found that regional transport of fugitive dust is responsible for the elevated coarse PM. This work sets an example of how field measurements can be effectively utilized for evidence-based policymaking.
Men Xia, Xiang Peng, Weihao Wang, Chuan Yu, Zhe Wang, Yee Jun Tham, Jianmin Chen, Hui Chen, Yujing Mu, Chenglong Zhang, Pengfei Liu, Likun Xue, Xinfeng Wang, Jian Gao, Hong Li, and Tao Wang
Atmos. Chem. Phys., 21, 15985–16000, https://doi.org/10.5194/acp-21-15985-2021, https://doi.org/10.5194/acp-21-15985-2021, 2021
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ClNO2 is an important precursor of chlorine radical that affects photochemistry. However, its production and impact are not well understood. Our study presents field observations of ClNO2 at three sites in northern China. These observations provide new insights into nighttime processes that produce ClNO2 and the significant impact of ClNO2 on secondary pollutions during daytime. The results improve the understanding of photochemical pollution in the lower part of the atmosphere.
Mingshuai Zhang, Chun Zhao, Yuhan Yang, Qiuyan Du, Yonglin Shen, Shengfu Lin, Dasa Gu, Wenjing Su, and Cheng Liu
Geosci. Model Dev., 14, 6155–6175, https://doi.org/10.5194/gmd-14-6155-2021, https://doi.org/10.5194/gmd-14-6155-2021, 2021
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Biogenic volatile organic compounds (BVOCs) can influence atmospheric chemistry and secondary pollutant formation. This study examines the performance of different versions of the Model of Emissions of Gases and Aerosols from Nature (MEGAN) in modeling BVOCs and ozone and their sensitivities to vegetation distributions over eastern China. The results suggest more accurate vegetation distribution and measurements of BVOC emission fluxes are needed to reduce the uncertainties.
Yuliang Liu, Wei Nie, Yuanyuan Li, Dafeng Ge, Chong Liu, Zhengning Xu, Liangduo Chen, Tianyi Wang, Lei Wang, Peng Sun, Ximeng Qi, Jiaping Wang, Zheng Xu, Jian Yuan, Chao Yan, Yanjun Zhang, Dandan Huang, Zhe Wang, Neil M. Donahue, Douglas Worsnop, Xuguang Chi, Mikael Ehn, and Aijun Ding
Atmos. Chem. Phys., 21, 14789–14814, https://doi.org/10.5194/acp-21-14789-2021, https://doi.org/10.5194/acp-21-14789-2021, 2021
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Oxygenated organic molecules (OOMs) are crucial intermediates linking volatile organic compounds to secondary organic aerosols. Using nitrate time-of-flight chemical ionization mass spectrometry in eastern China, we performed positive matrix factorization (PMF) on binned OOM mass spectra. We reconstructed over 1000 molecules from 14 derived PMF factors and identified about 72 % of the observed OOMs as organic nitrates, highlighting the decisive role of NOx in OOM formation in populated areas.
Dianne Sanchez, Roger Seco, Dasa Gu, Alex Guenther, John Mak, Youngjae Lee, Danbi Kim, Joonyoung Ahn, Don Blake, Scott Herndon, Daun Jeong, John T. Sullivan, Thomas Mcgee, Rokjin Park, and Saewung Kim
Atmos. Chem. Phys., 21, 6331–6345, https://doi.org/10.5194/acp-21-6331-2021, https://doi.org/10.5194/acp-21-6331-2021, 2021
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We present observations of total reactive gases in a suburban forest observatory in the Seoul metropolitan area. The quantitative comparison with speciated trace gas observations illustrated significant underestimation in atmospheric reactivity from the speciated trace gas observational dataset. We present scientific discussion about potential causes.
Yao Wang, Yue Zhao, Yuchen Wang, Jian-Zhen Yu, Jingyuan Shao, Ping Liu, Wenfei Zhu, Zhen Cheng, Ziyue Li, Naiqiang Yan, and Huayun Xiao
Atmos. Chem. Phys., 21, 2959–2980, https://doi.org/10.5194/acp-21-2959-2021, https://doi.org/10.5194/acp-21-2959-2021, 2021
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Organosulfates (OSs) are important constituents and tracers of secondary organic aerosols (SOAs) in the atmosphere. Here we characterized the OS species in ambient aerosols in Shanghai, China. We find that the contributions of OSs and SOAs to organic aerosols have increased in recent years and that OS production was largely controlled by the oxidant level (Ox), particularly in summer. We infer that mitigation of Ox pollution can effectively reduce the production of OSs and SOAs in eastern China.
Cited articles
Al-Naiema, I. M. and Stone, E. A.: Evaluation of anthropogenic secondary organic aerosol tracers from aromatic hydrocarbons, Atmos. Chem. Phys., 17, 2053–2065, https://doi.org/10.5194/acp-17-2053-2017, 2017.
Atkinson, R. and Arey, J.: Gas-phase tropospheric chemistry of biogenic
volatile organic compounds: A review, Atmos. Environ., 37,
197–219, https://doi.org/10.1016/S1352-2310(03)00391-1, 2003.
Chan, M. N., Surratt, J. D., Chan, A. W. H., Schilling, K., Offenberg, J. H., Lewandowski, M., Edney, E. O., Kleindienst, T. E., Jaoui, M., Edgerton, E. S., Tanner, R. L., Shaw, S. L., Zheng, M., Knipping, E. M., and Seinfeld, J. H.: Influence of aerosol acidity on the chemical composition of secondary organic aerosol from β-caryophyllene, Atmos. Chem. Phys., 11, 1735–1751, https://doi.org/10.5194/acp-11-1735-2011, 2011.
Chow, K. S., Huang, X. H. H., and Yu, J. Z.: Quantification of nitroaromatic
compounds in atmospheric fine particulate matter in Hong Kong over 3 years:
Field measurement evidence for secondary formation derived from biomass
burning emissions, Environ. Chem., 13, 665–673, https://doi.org/10.1071/EN15174,
2016.
Claeys, M., Graham, B., Vas, G., Wang, W., Vermeylen, R., Pashynska, V.,
Cafmeyer, J., Guyon, P., Andreae, M. O., Artaxo, P., and Maenhaut, W.:
Formation of Secondary Organic Aerosols Through Photooxidation of Isoprene,
Science, 303, 1173–1176, https://doi.org/10.1126/science.1092805, 2004.
Claeys, M., Szmigielski, R., Kourtchev, I., Van Der Veken, P., Vermeylen,
R., Maenhaut, W., Jaoui, M., Kleindienst, T. E., Lewandowski, M., Offenberg,
J. H., and Edney, E. O.: Hydroxydicarboxylic acids: Markers for secondary
organic aerosol from the photooxidation of α-pinene, Environ. Sci.
Technol., 41, 1628–1634, https://doi.org/10.1021/es0620181, 2007.
Ding, X., Wang, X. M., Gao, B., Fu, X. X., He, Q. F., Zhao, X. Y., Yu, J. Z.,
and Zheng, M.: Tracer-based estimation of secondary organic carbon in the
Pearl River Delta, south China, J. Geophys. Res.-Atmos., 117, 1–14,
https://doi.org/10.1029/2011JD016596, 2012.
Ding, X., He, Q. F., Shen, R. Q., Yu, Q. Q., Zhang, Y. Q., Xin, J. Y., Wen,
T. X., and Wang, X. M.: Spatial and seasonal variations of isoprene secondary
organic aerosol in China: Significant impact of biomass burning during
winter, Sci. Rep., 6, 1–10, https://doi.org/10.1038/srep20411, 2016.
Edney, E. O., Kleindienst, T. E., Jaoui, M., Lewandowski, M., Offenberg, J.
H., Wang, W., and Claeys, M.: Formation of 2-methyl tetrols and
2-methylglyceric acid in secondary organic aerosol from laboratory
irradiated isoprene/NOX/SO 2/air mixtures and their detection in ambient
PM2.5 samples collected in the eastern United States, Atmos. Environ.,
39, 5281–5289, https://doi.org/10.1016/j.atmosenv.2005.05.031, 2005.
Finewax, Z., De Gouw, J. A., and Ziemann, P. J.: Identification and
Quantification of 4-Nitrocatechol Formed from OH and NO3 Radical-Initiated
Reactions of Catechol in Air in the Presence of NOx: Implications for
Secondary Organic Aerosol Formation from Biomass Burning, Environ. Sci.
Technol., 52, 1981–1989, https://doi.org/10.1021/acs.est.7b05864, 2018.
He, X., Huang, X. H. H., Chow, K. S., Wang, Q., Zhang, T., Wu, D., and Yu, J.
Z.: Abundance and Sources of Phthalic Acids, Benzene-Tricarboxylic Acids,
and Phenolic Acids in PM2.5 at Urban and Suburban Sites in Southern China,
ACS Earth Sp. Chem., 2, 147–158, https://doi.org/10.1021/acsearthspacechem.7b00131,
2018.
He, X., Wang, Q., Huang, X. H. H., Huang, D. D., Zhou, M., Qiao, L., Zhu,
S., Ma, Y. ge, Wang, H. li, Li, L., Huang, C., Xu, W., Worsnop, D. R.,
Goldstein, A. H., and Yu, J. Z.: Hourly measurements of organic molecular
markers in urban Shanghai, China: Observation of enhanced formation of
secondary organic aerosol during particulate matter episodic periods, Atmos.
Environ., 240, 117807, https://doi.org/10.1016/j.atmosenv.2020.117807, 2020.
Hu, D., Bian, Q., Li, T. W. Y., Lau, A. K. H., and Yu, J. Z.: Contributions
of isoprene, monoterpenes, β-caryophyllene, and toluene to secondary
organic aerosols in Hong Kong during the summer of 2006, J. Geophys. Res.-Atmos., 113, 1–14, https://doi.org/10.1029/2008JD010437, 2008.
Huang, X. H. H., Bian, Q., Ng, W. M., Louie, P. K. K., and Yu, J. Z.:
Characterization of PM2.5 major components and source investigation in
suburban Hong Kong: A one year monitoring study, Aerosol Air Qual. Res.,
14, 237–250, https://doi.org/10.4209/aaqr.2013.01.0020, 2014.
Jaoui, M., Lewandowski, M., Kleindienst, T. E., Offenberg, J. H., and Edney,
E. O.: β-caryophyllinic acid: An atmospheric tracer for β-caryophyllene secondary organic aerosol, Geophys. Res. Lett., 34, 1–4,
https://doi.org/10.1029/2006GL028827, 2007.
Kleindienst, T. E., Lewandowski, M., Offenberg, J. H., Jaoui, M., and Edney,
E. O.: Ozone-isoprene reaction: Re-examination of the formation of secondary
organic aerosol, Geophys. Res. Lett., 34, 1–6, https://doi.org/10.1029/2006GL027485,
2007.
Kleindienst, T. E., Jaoui, M., Lewandowski, M., Offenberg, J. H., and Docherty, K. S.: The formation of SOA and chemical tracer compounds from the photooxidation of naphthalene and its methyl analogs in the presence and absence of nitrogen oxides, Atmos. Chem. Phys., 12, 8711–8726, https://doi.org/10.5194/acp-12-8711-2012, 2012.
Lee, B. P., Li, Y. J., Yu, J. Z., Louie, P. K. K., and Chan, C. K.:
Characteristics of submicron particulate matter at the Urban roadside in
downtown Hong Kong-Overview of 4 months of continuous high-Resolution
aerosol mass spectrometer measurements, J. Geophys. Res., 120,
7040–7058, https://doi.org/10.1002/2015JD023311, 2015.
Li, X. B., Yuan, B., Parrish, D. D., Chen, D., Song, Y., Yang, S., Liu, Z.,
and Shao, M.: Long-term trend of ozone in southern China reveals future
mitigation strategy for air pollution, Atmos. Environ., 269, 118869,
https://doi.org/10.1016/j.atmosenv.2021.118869, 2022.
Li, Y. J., Lee, B. P., Su, L., Fung, J. C. H., and Chan, C. K.: Seasonal characteristics of fine particulate matter (PM) based on high-resolution time-of-flight aerosol mass spectrometric (HR-ToF-AMS) measurements at the HKUST Supersite in Hong Kong, Atmos. Chem. Phys., 15, 37–53, https://doi.org/10.5194/acp-15-37-2015, 2015.
Liu, P., Ye, C., Xue, C., Zhang, C., Mu, Y., and Sun, X.: Formation mechanisms of atmospheric nitrate and sulfate during the winter haze pollution periods in Beijing: gas-phase, heterogeneous and aqueous-phase chemistry, Atmos. Chem. Phys., 20, 4153–4165, https://doi.org/10.5194/acp-20-4153-2020, 2020.
Lu, C., Wang, X., Li, R., Gu, R., Zhang, Y., Li, W., Gao, R., Chen, B., Xue,
L., and Wang, W.: Emissions of fine particulate nitrated phenols from
residential coal combustion in China, Atmos. Environ., 203, 10–17,
https://doi.org/10.1016/j.atmosenv.2019.01.047, 2019.
Nozière, B., Kalberer, M., Claeys, M., Allan, J., D'Anna, B., Decesari,
S., Finessi, E., Glasius, M., Grgić, I., Hamilton, J. F., Hoffmann, T.,
Iinuma, Y., Jaoui, M., Kahnt, A., Kampf, C. J., Kourtchev, I., Maenhaut, W.,
Marsden, N., Saarikoski, S., Schnelle-Kreis, J., Surratt, J. D., Szidat, S.,
Szmigielski, R., and Wisthaler, A.: The Molecular Identification of Organic
Compounds in the Atmosphere: State of the Art and Challenges, Chem. Rev.,
115, 3919–3983, https://doi.org/10.1021/cr5003485, 2015.
Offenberg, J. H., Lewis, C. W., Lewandowski, M., Jaoui, M., Kleindienst, T.
E., and Edney, E. O.: Contributions of toluene and α-pinene to SOA
formed in an irradiated toluene/α-pinene/NOx/air mixture: comparison
of results using 14C content and SOA organic tracer methods, Environ. Sci.
Technol., 41, 3972–3976, https://doi.org/10.1021/es070089+, 2007.
Prinn, R., Cunnold, D., Rasmussen, R., Simmonds, P., Alyea, F., Crawford, A., Fraser, P., and Rosen, R.: Atmospheric trends in methylchloroform and the global average for the hydroxyl radical, Science, 238, 945–950, https://doi.org/10.1126/science.238.4829.945, 1987.
Qin, Y. M., Li, Y. J., Wang, H., Lee, B. P. Y. L., Huang, D. D., and Chan, C. K.: Particulate matter (PM) episodes at a suburban site in Hong Kong: evolution of PM characteristics and role of photochemistry in secondary aerosol formation, Atmos. Chem. Phys., 16, 14131–14145, https://doi.org/10.5194/acp-16-14131-2016, 2016.
Riva, M., Budisulistiorini, S. H., Zhang, Z., Gold, A., and Surratt, J. D.:
Chemical characterization of secondary organic aerosol constituents from
isoprene ozonolysis in the presence of acidic aerosol, Atmos. Environ., 130,
5–13, https://doi.org/10.1016/j.atmosenv.2015.06.027, 2016.
Simoneit, B. R. T., Schauer, J. J., Nolte, C. G., Oros, D. R., Elias, V. O.,
Fraser, M. P., Rogge, W. F., and Cass, G. R.: Levoglucosan, a tracer for
cellulose in biomass burning and atmospheric particles, Atmos. Environ.,
33, 1–10, 1999.
Sun, C., Lee, B. P., Huang, D., Jie Li, Y., Schurman, M. I., Louie, P. K. K., Luk, C., and Chan, C. K.: Continuous measurements at the urban roadside in an Asian megacity by Aerosol Chemical Speciation Monitor (ACSM): particulate matter characteristics during fall and winter seasons in Hong Kong, Atmos. Chem. Phys., 16, 1713–1728, https://doi.org/10.5194/acp-16-1713-2016, 2016.
Surratt, J. D., Chan, A. W. H., Eddingsaas, N. C., Chan, M. N., Loza, C. L.,
Kwan, A. J., Hersey, S. P., Flagan, R. C., Wennberg, P. O., and Seinfeld, J.
H.: Reactive intermediates revealed in secondary organic aerosol formation
from isoprene, P. Natl. Acad. Sci. USA, 107, 6640–6645,
https://doi.org/10.1073/pnas.0911114107, 2010.
Szmigielski, R., Surratt, J. D., Gómez-González, Y., van der Veken,
P., Kourtchev, I., Vermeylen, R., Blockhuys, F., Jaoui, M., Kleindienst, T.
E., Lewandowski, M., Offenberg, J. H., Edney, E. O., Seinfeld, J. H.,
Maenhaut, W., and Claeys, M.: 3-methyl-1,2,3-butanetricarboxylic acid: An
atmospheric tracer for terpene secondary organic aerosol, Geophys. Res.
Lett., 34, 2–7, https://doi.org/10.1029/2007GL031338, 2007.
Wang, L., Atkinson, R., and Arey, J.: Dicarbonyl products of the OH
radical-initiated reactions of naphthalene and the C1- and
C2-alkylnaphthalenes, Environ. Sci. Technol., 41, 2803–2810,
https://doi.org/10.1021/es0628102, 2007.
Wang, Q., He, X., Zhou, M., Huang, D. D., Qiao, L., Zhu, S., Ma, Y. G.,
Wang, H. L., Li, L., Huang, C., Huang, X. H. H., Xu, W., Worsnop, D.,
Goldstein, A. H., Guo, H., Yu, J. Z., Huang, C., and Yu, J. Z.: Hourly
Measurements of Organic Molecular Markers in Urban Shanghai, China: Primary
Organic Aerosol Source Identification and Observation of Cooking Aerosol
Aging, ACS Earth Sp. Chem., 4, 1670–1685,
https://doi.org/10.1021/acsearthspacechem.0c00205, 2020.
Wang, X., Chen, W., Chen, D., Wu, Z., and Fan, Q.: Long-term trends of fine
particulate matter and chemical composition in the Pearl River Delta
Economic Zone (PRDEZ), China, Front. Environ. Sci. Eng., 10, 53–62,
https://doi.org/10.1007/s11783-014-0728-z, 2016.
Wang, Y., Gao, W., Wang, S., Song, T., Gong, Z., Ji, D., Wang, L., Liu, Z.,
Tang, G., Huo, Y., Tian, S., Li, J., Li, M., Yang, Y., Chu, B.,
Petäjä, T., Kerminen, V. M., He, H., Hao, J., Kulmala, M., Wang, Y.,
and Zhang, Y.: Contrasting trends of PM2.5and surface-ozone concentrations
in China from 2013 to 2017, Natl. Sci. Rev., 7, 1331–1339,
https://doi.org/10.1093/nsr/nwaa032, 2020.
WHO: WHO global air quality guidelines: particulate matter (PM2.5 and
PM10), ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide, World
Health Organization, https://apps.who.int/iris/handle/10665/345329 (last access: 9 August 2022), 1–360, 2021.
Yu, J. Z.: Chemical Characterization of Water Soluble Organic Compounds in
Particulate Matters in Hong Kong, Environ. Prot. Dep.,
https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.562.1645&rep=rep1&type=pdf (last access: 23 April 2022),
2002.
Yu, J. Z., Wang, Q. Q., and Wang, S.: PM2.5 major components and select tracers during eleven pollution episodes (30 Aug.–31 Dec. 2020) at the HKUST Air Quality Research Supersite, Hong Kong, DataSpace@HKUST [data set], https://doi.org/10.14711/dataset/1KGKWN, 2022.
Yuan, Q., Lai, S., Song, J., Ding, X., Zheng, L., Wang, X., Zhao, Y., Zheng,
J., Yue, D., Zhong, L., Niu, X., and Zhang, Y.: Seasonal cycles of secondary
organic aerosol tracers in rural Guangzhou, Southern China: The importance
of atmospheric oxidants, Environ. Pollut., 240, 884–893,
https://doi.org/10.1016/j.envpol.2018.05.009, 2018.
Yuan, W., Huang, R.-J., Yang, L., Wang, T., Duan, J., Guo, J., Ni, H., Chen, Y., Chen, Q., Li, Y., Dusek, U., O'Dowd, C., and Hoffmann, T.: Measurement report: PM2.5-bound nitrated aromatic compounds in Xi'an, Northwest China – seasonal variations and contributions to optical properties of brown carbon, Atmos. Chem. Phys., 21, 3685–3697, https://doi.org/10.5194/acp-21-3685-2021, 2021.
Yun, H., Wang, W., Wang, T., Xia, M., Yu, C., Wang, Z., Poon, S. C. N., Yue, D., and Zhou, Y.: Nitrate formation from heterogeneous uptake of dinitrogen pentoxide during a severe winter haze in southern China, Atmos. Chem. Phys., 18, 17515–17527, https://doi.org/10.5194/acp-18-17515-2018, 2018.
Zanobetti, A., Schwartz, J., and Gold, D.: Are there sensitive subgroups for
the effects of airborne particles?, Environ. Health Persp., 108,
841–845, https://doi.org/10.1289/ehp.00108841, 2000.
Zhang, J., He, X., Gao, Y., Zhu, S., Jing, S., Wang, H., Yu, J. Z., and Ying,
Q.: Estimation of Aromatic Secondary Organic Aerosol Using a Molecular
Tracer–A Chemical Transport Model Assessment, Environ. Sci. Technol.,
55, 12882–12892, https://doi.org/10.1021/acs.est.1c03670, 2021.
Short summary
Secondary organic aerosol (SOA) is often enhanced during fine-particulate-matter (PM2.5) episodes. We examined bi-hourly measurements of SOA molecular tracers in suburban Hong Kong during 11 city-wide PM2.5 episodes. The tracers showed regional characteristics for both anthropogenic and biogenic SOA as well as biomass-burning-derived SOA. Multiple tracers of the same precursor revealed the dominance of low-NOx formation pathways for isoprene SOA and less-aged monoterpene SOA during winter.
Secondary organic aerosol (SOA) is often enhanced during fine-particulate-matter (PM2.5)...
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