Articles | Volume 19, issue 14
https://doi.org/10.5194/acp-19-9309-2019
© Author(s) 2019. 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-19-9309-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Jul 2019
Research article |
| 19 Jul 2019
| 19 Jul 2019
The sensitivity of PM2.5 acidity to meteorological parameters and chemical composition changes: 10-year records from six Canadian monitoring sites
Ye Tao
Department of Physical and Environmental Sciences, University of
Toronto Scarborough, Toronto, ON, M1C 1A4, Canada
Jennifer G. Murphy
CORRESPONDING AUTHOR
Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6,
Canada
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- Rising Alkali-to-Acid Ratios in the Atmosphere May Correspond to Increased Aerosol Acidity G. Zheng et al. 10.1021/acs.est.4c06860
- Simple Framework to Quantify the Contributions from Different Factors Influencing Aerosol pH Based on NHx Phase-Partitioning Equilibrium Y. Tao & J. Murphy 10.1021/acs.est.1c03103
- Acidity and inorganic ion formation in PM2.5 based on continuous online observations in a South China megacity L. Wu et al. 10.1016/j.apr.2020.05.003
- Significant contrasts in aerosol acidity between China and the United States B. Zhang et al. 10.5194/acp-21-8341-2021
- How alkaline compounds control atmospheric aerosol particle acidity V. Karydis et al. 10.5194/acp-21-14983-2021
- Sources of Wintertime Atmospheric Organic Pollutants in a Large Canadian City: Insights from Particle and Gas Phase Measurements L. Rivellini et al. 10.1021/acsestair.4c00039
- Elucidating Decade-Long Trends and Diurnal Patterns in Aerosol Acidity in Shanghai Z. Lv et al. 10.3390/atmos15081004
- Exploring controls on perfluorocarboxylic acid (PFCA) gas–particle partitioning using a model with observational constraints Y. Tao et al. 10.1039/D2EM00261B
- Quantitative Decomposition of Influencing Factors to Aerosol pH Variation over the Coasts of the South China Sea, East China Sea, and Bohai Sea G. Wang et al. 10.1021/acs.estlett.2c00527
- Anthropogenic pollutants induce enhancement of aerosol acidity at a mountainous background atmosphere in southern China G. Wu et al. 10.1016/j.scitotenv.2023.166192
- Characteristics, source analysis, and health risk of PM2.5 in the urban tunnel environment associated with E10 petrol usage N. Jiang et al. 10.1007/s11356-024-33194-0
- Nitrate-dominated PM<sub>2.5</sub> and elevation of particle pH observed in urban Beijing during the winter of 2017 Y. Xie et al. 10.5194/acp-20-5019-2020
- Fine particle pH and its influencing factors during summer at Mt. Tai: Comparison between mountain and urban sites P. Liu et al. 10.1016/j.atmosenv.2021.118607
- Seasonal variation of aerosol acidity in Nagoya, Japan and factors affecting it Q. Song & K. Osada 10.1016/j.aeaoa.2020.100062
- Fine Particle Iron in Soils and Road Dust Is Modulated by Coal-Fired Power Plant Sulfur J. Wong et al. 10.1021/acs.est.0c00483
- Thermodynamic Modeling Suggests Declines in Water Uptake and Acidity of Inorganic Aerosols in Beijing Winter Haze Events during 2014/2015–2018/2019 S. Song et al. 10.1021/acs.estlett.9b00621
- Multiphase buffer theory explains contrasts in atmospheric aerosol acidity G. Zheng et al. 10.1126/science.aba3719
- Kinetics and Products of the Aqueous Phase Oxidation of Triethylamine by OH Y. Tao et al. 10.1021/acsearthspacechem.1c00162
- Knowledge-guided machine learning reveals pivotal drivers for gas-to-particle conversion of atmospheric nitrate B. Xu et al. 10.1016/j.ese.2023.100333
- Chemical transport models often underestimate inorganic aerosol acidity in remote regions of the atmosphere B. Nault et al. 10.1038/s43247-021-00164-0
- Simulations of aerosol pH in China using WRF-Chem (v4.0): sensitivities of aerosol pH and its temporal variations during haze episodes X. Ruan et al. 10.5194/gmd-15-6143-2022
- The Mechanisms Responsible for the Interactions among Oxalate, pH, and Fe Dissolution in PM2.5 Y. Tao & J. Murphy 10.1021/acsearthspacechem.9b00172
- Interferences with aerosol acidity quantification due to gas-phase ammonia uptake onto acidic sulfate filter samples B. Nault et al. 10.5194/amt-13-6193-2020
- Urban aerosol chemistry at a land–water transition site during summer – Part 2: Aerosol pH and liquid water content M. Battaglia Jr. et al. 10.5194/acp-21-18271-2021
- Quantitative analysis of influencing factors to aerosol pH and its responses to PM2.5 and O3 pollution in a coastal city K. Xu et al. 10.1016/j.jes.2024.03.044
- pH dependence of brown-carbon optical properties in cloud water C. Hennigan et al. 10.5194/acp-23-14437-2023
- Impact of non-ideality on reconstructing spatial and temporal variations in aerosol acidity with multiphase buffer theory G. Zheng et al. 10.5194/acp-22-47-2022
- Long-term observational constraints of organic aerosol dependence on inorganic species in the southeast US Y. Zheng et al. 10.5194/acp-20-13091-2020
- The acidity of atmospheric particles and clouds H. Pye et al. 10.5194/acp-20-4809-2020
- Measurement report: Stoichiometry of dissolved iron and aluminum as an indicator of the factors controlling the fractional solubility of aerosol iron – results of the annual observations of size-fractionated aerosol particles in Japan K. Sakata et al. 10.5194/acp-23-9815-2023
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- Long-term trends and sensitivities of PM2.5 pH and aerosol liquid water to chemical composition changes and meteorological parameters in Hong Kong, South China: Insights from 10-year records from three urban sites T. Nah et al. 10.1016/j.atmosenv.2023.119725
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- Aerosol acidity and its impact on sulfate and nitrate of PM2.5 in southern city of Beijing-Tianjin-Hebei region Z. Wei & N. Tahrin 10.1016/j.apr.2023.101997
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Latest update: 12 Jan 2025
Short summary
In this study, we analyzed the 10-year variation of aerosol pH in six Canadian cities and found the variation is largely attributed to the seasonal cycling of ambient temperature. We also found that in different seasons the pH sensitivity to chemical composition is distinctly different. This finding suggests the sensitivity of aerosol pH to chemical composition needs to be carefully examined for any particular region.
In this study, we analyzed the 10-year variation of aerosol pH in six Canadian cities and found...
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