Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 24
Articles | Volume 25, issue 24
https://doi.org/10.5194/acp-25-18313-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-18313-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 24
Research article
 | 
15 Dec 2025
Research article |  | 15 Dec 2025

Ethylamine-driven amination of organic particles: mechanistic insights via key intermediates identification

Peiqi Liu, Jigang Gao, Yulong Hu, Wenhao Yuan, Zhongyue Zhou, Fei Qi, and Meirong Zeng

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Short summary
This study examines ethylamine reactions with organic aerosols, showing secondary ozonides react more slowly than carboxylic acids or aldehydes, with decreasing reactivity as carbon chains lengthen. Advanced techniques revealed key intermediates (hydroxyl peroxyamines, amino hydroperoxides) and novel pathways, establishing a quantitative framework linking molecular processes to aerosol aging for atmospheric chemistry models.
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