Articles | Volume 21, issue 10
Atmos. Chem. Phys., 21, 7963–7981, 2021
https://doi.org/10.5194/acp-21-7963-2021
Atmos. Chem. Phys., 21, 7963–7981, 2021
https://doi.org/10.5194/acp-21-7963-2021

Research article 25 May 2021

Research article | 25 May 2021

SO2 and NH3 emissions enhance organosulfur compounds and fine particle formation from the photooxidation of a typical aromatic hydrocarbon

Zhaomin Yang et al.

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Short summary
The promotion effects of SO2 and NH3 on particle and organosulfur compound formation from 1,2,4-trimethylbenzene (TMB) photooxidation were observed for the first time. The enhanced organosulfur compounds included hitherto unidentified aromatic sulfonates and organosulfates (OSs). OSs were produced via acid-driven heterogeneous chemistry of hydroperoxides. The production of organosulfur compounds might provide a new pathway for the fate of TMB in regions with considerable SO2 emissions.
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