Articles | Volume 22, issue 10
https://doi.org/10.5194/acp-22-6971-2022
© 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-22-6971-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 May 2022
Research article |
| 31 May 2022
| 31 May 2022
Reversible and irreversible gas–particle partitioning of dicarbonyl compounds observed in the real atmosphere
Jingcheng Hu
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Zhongming Chen
CORRESPONDING AUTHOR
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Xuan Qin
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Ping Dong
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Related authors
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Hengqing Shen, Liubin Huang, Yue Zhao, Min Zhao, Yu Yang, Huan Li, Huihui Wu, and Zhongming Chen
EGUsphere, https://doi.org/10.5194/egusphere-2026-234, https://doi.org/10.5194/egusphere-2026-234, 2026
Short summary
Short summary
This study shows that the air pollutant toluene produces much more formic acid and acetic acid during atmospheric aging than previously thought. Laboratory experiments show these acids mainly form through multiple oxidation steps and are poorly represented in current models. This missing chemistry helps explain why models underestimate organic acids and highlights their role in air quality and climate.
Jiayun Xu, Zhongming Chen, Xuan Qin, and Ping Dong
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-444, https://doi.org/10.5194/acp-2022-444, 2022
Revised manuscript not accepted
Short summary
Short summary
We investigated the photooxidation of isoprene in the presence of water. We found that water enhanced the formation of methacrolein and methyl vinyl ketone in the first-generation reactions by changing the structures of the reaction intermediates and raised formic acid and acetic acid yields considerably in the multi-generation reactions. The results of this study help understand the fate of isoprene in the atmosphere and improve the effect of the atmospheric simulations.
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Short summary
The gas–particle partitioning process of glyoxal and methylglyoxal could contribute to secondary organic aerosol formation. Here, we launched five observations in different seasons and simultaneously measured glyoxal and methylglyoxal in the gas and particle phases. Compared to reversible pathways, irreversible pathways played a dominant role with a proportion of more than 90 % in the ambient atmosphere, and the proportion was influenced by relative humidity and inorganic components in aerosols.
The gas–particle partitioning process of glyoxal and methylglyoxal could contribute to secondary...
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