Articles | Volume 26, issue 1
https://doi.org/10.5194/acp-26-769-2026
© Author(s) 2026. 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-26-769-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Jan 2026
Research article |
| 15 Jan 2026
| 15 Jan 2026
New insight into the formation and aging processes of organic aerosol from positive matrix factorization (PMF) analysis of ambient FIGAERO-CIMS thermograms
Mingfu Cai
Guangdong Province Engineering Laboratory for Air Pollution Control, Guangdong Provincial Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, MEE, Guangzhou 510655, China
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Jinan University, Guangzhou 510632, China
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Jinan University, Guangzhou 510632, China
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China
Ye Chenshuo
Guangdong Provincial Academy of Environmental Science, Guangzhou 510045, China
Shan Huang
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Jinan University, Guangzhou 510632, China
Suxia Yang
Guangzhou Research Institute of Environment Protection Co., Ltd, Guangzhou 510620, China
Wei Chen
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Yuwen Peng
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Jinan University, Guangzhou 510632, China
Zhaoxiong Deng
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Jinan University, Guangzhou 510632, China
Jun Zhao
School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, and Institute of Earth Climate and Environment System, Sun Yat-sen University, Zhuhai 519082, China
deceased, October 2024
Duohong Chen
Guangdong Environmental Monitoring Center, Guangzhou 510308, China
Jiaren Sun
Guangdong Province Engineering Laboratory for Air Pollution Control, Guangdong Provincial Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, MEE, Guangzhou 510655, China
Min Shao
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Jinan University, Guangzhou 510632, China
Data sets
New insight into the formation and aging processes of organic aerosols from positive matrix factorization analysis to ambient FIGAERO-CIMS thermograms Mingfu Cai https://doi.org/10.6084/m9.figshare.30155584
Short summary
This study investigates how the formation and aging processes of secondary organic aerosol (SOA) influence the evolution of SOA volatility in downwind regions. Our results reveal that elevated NOₓ levels enhanced the daytime SOA volatility by modifying gas-particle partitioning, particularly through suppressing the production of low-volatility organic vapors. In contrast, photochemical aging was associated with reduced SOA volatility.
This study investigates how the formation and aging processes of secondary organic aerosol (SOA)...
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