Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 15
Articles | Volume 26, issue 15
https://doi.org/10.5194/acp-26-11153-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-11153-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 15
Research article
 | 
10 Aug 2026
Research article |  | 10 Aug 2026

Exploring the hydrogen abstraction pathway in HOM formation from α-pinene photooxidation systems under varying NO conditions

Hui Wang, Hongru Shen, Defeng Zhao, Sungah Kang, Rongrong Wu, Yarê Baker, Quanfu He, Annika Zanders, Mathias Bachner, Douglas R. Worsnop, Thorsten Hohaus, Thomas F. Mentel, and Sören R. Zorn

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Short summary
Chamber simulations were conducted to investigate formation of highly oxygenated organic molecules (HOM) from OH-initiated α-pinene oxidation under varying NO levels, with emphasis on the hydrogen-abstraction pathway. Without NO, C10H17Oₓ· species dominated. With NO, C10H15Oₓ· products became more abundant, accounting for ~34 % at high NO levels. Clustering results and comparison with α-pinene and pinonaldehyde systems show that hydrogen-abstraction is likely the source of C10H15Oₓ·-related HOM.
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