Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 9
Articles | Volume 26, issue 9
https://doi.org/10.5194/acp-26-6147-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-6147-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 9
Research article
 | 
08 May 2026
Research article |  | 08 May 2026

Investigating the role of ammonia in enhancing secondary organic aerosol formation from the co-photooxidation of anthropogenic and biogenic VOCs

Yongxin Yan, Junling Li, Yufei Song, Yushi Gong, Shudan Wei, Zhaolin Wang, Haijie Zhang, Yanqin Ren, Maofa Ge, and Hong Li

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Short summary
This work examines NH3 effects on photochemical oxidation of mixed anthropogenic and biogenic volatile organic compounds (VOC) under high-NOx conditions. NH3 promotes nucleation and accelerates secondary organic aerosol (SOA) formation. NH3 enhances carbonyls, strengthens SOA formation via acid-base and radical reactions, and suppresses highly oxygenated organic molecules. Results improve understanding of SOA formation in complex emissions, aiding air quality forecasting.
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