Articles | Volume 21, issue 9
Atmos. Chem. Phys., 21, 6647–6661, 2021
https://doi.org/10.5194/acp-21-6647-2021
Atmos. Chem. Phys., 21, 6647–6661, 2021
https://doi.org/10.5194/acp-21-6647-2021

Research article 04 May 2021

Research article | 04 May 2021

Heterogeneous interactions between SO2 and organic peroxides in submicron aerosol

Shunyao Wang et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Shunyao Wang on behalf of the Authors (12 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (20 Feb 2021) by Hang Su
RR by Anonymous Referee #2 (24 Feb 2021)
ED: Publish subject to minor revisions (review by editor) (09 Mar 2021) by Hang Su
AR by Shunyao Wang on behalf of the Authors (11 Mar 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (11 Mar 2021) by Hang Su
AR by Shunyao Wang on behalf of the Authors (12 Mar 2021)  Author's response    Manuscript
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Short summary
Discrepancies between atmospheric modeling and field observations, especially in highly polluted cities, have highlighted the lack of understanding of sulfate formation mechanisms and kinetics. Here, we directly quantify the reactive uptake coefficient of SO2 onto organic peroxides and study the important governing factors. The SO2 uptake rate was observed to depend on RH, peroxide amount and reactivity, pH, and ionic strength, which provides a framework to better predict sulfate formation.
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