Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 24, issue 4
Articles | Volume 24, issue 4
https://doi.org/10.5194/acp-24-2099-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-2099-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 24, issue 4
Research article
 | 
19 Feb 2024
Research article |  | 19 Feb 2024

Oxygenated organic molecules produced by low-NOx photooxidation of aromatic compounds: contributions to secondary organic aerosol and steric hindrance

Xi Cheng, Yong Jie Li, Yan Zheng, Keren Liao, Theodore K. Koenig, Yanli Ge, Tong Zhu, Chunxiang Ye, Xinghua Qiu, and Qi Chen

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Latest update: 08 May 2024
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Short summary
In this study we conducted laboratory measurements to investigate the formation of gas-phase oxygenated organic molecules (OOMs) from six aromatic volatile organic compounds (VOCs). We provide a thorough analysis on the effects of precursor structure (substituents and ring numbers) on product distribution and highlight from a laboratory perspective that heavy (e.g., double-ring) aromatic VOCs are important in initial particle growth during secondary organic aerosol formation.
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