Rapid secondary organic aerosol formation at  the air–water interface from methoxyphenols  in wildfire emissions: UVA-driven S(IV)  photooxidation to organosulfates

Cai, Baohua; Huang, Yuanlong; Jiang, Wenqing; Li, Yanchen; Li, Yali; Zhai, Jinghao; Zeng, Yaling; Ye, Jianhuai; Shen, Huizhong; Wang, Chen; Zhu, Lei; Fu, Tzung-May; Zhang, Qi; Yang, Xin

doi:10.5194/acp-26-5713-2026

Articles | Volume 26, issue 8

https://doi.org/10.5194/acp-26-5713-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-5713-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 8

Research article

|

27 Apr 2026

Research article |

| 27 Apr 2026

Rapid secondary organic aerosol formation at the air–water interface from methoxyphenols in wildfire emissions: UVA-driven S(IV) photooxidation to organosulfates

Baohua Cai, Yuanlong Huang, Wenqing Jiang, Yanchen Li, Yali Li, Jinghao Zhai, Yaling Zeng, Jianhuai Ye, Huizhong Shen, Chen Wang, Lei Zhu, Tzung-May Fu, Qi Zhang, and Xin Yang

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Cumulative views and downloads (calculated since 12 Nov 2025)

Month	HTML	PDF	XML	Total
Nov 2025	394	72	32	498
Dec 2025	82	38	10	130
Jan 2026	214	42	18	274
Feb 2026	148	64	14	226
Mar 2026	162	86	2	250
Apr 2026	296	83	10	389
May 2026	382	54	18	454
Jun 2026	35	14	7	56
Jul 2026	94	47	18	159
Aug 2026	46	14	4	64

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Short summary

This study reveals a novel Ultraviolet A-driven, metal-free mechanism for aqueous-phase tetravalent sulfur (S(IV)) oxidation that leads to organosulfates formation, addressing a critical knowledge gap in atmospheric sulfur and organic aerosol chemistry and highlighting a previously overlooked photochemical pathway with broad environmental implications.