Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 22
Articles | Volume 25, issue 22
https://doi.org/10.5194/acp-25-16041-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-16041-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 22
Research article
 | 
18 Nov 2025
Research article |  | 18 Nov 2025

Larger than expected organic acid yields from the multi-generation oxidation of petrochemical alkenes

Baocong Zhao, Luxin Ren, Sihao Lin, Yongpeng Ji, Jiaxin Wang, Tao Ma, Yuemeng Ji, and Taicheng An

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Short summary
Recent studies have shown that atmospheric oxidation of alkenes is a major source of organic acids. Using quantum-chemical calculations and photochemical box model simulation with an updated Master Chemical Mechanism, we found that the formation pathway of acetic acid from the 2-butene + OH reaction involves NO-mediated multi-generation oxidation processes. Our findings enhance the understanding of organic acid formation and highlight the pivotal role of NO in polluted urban atmospheres.
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