Articles | Volume 20, issue 7
Atmos. Chem. Phys., 20, 4153–4165, 2020
https://doi.org/10.5194/acp-20-4153-2020

Special issue: Multiphase chemistry of secondary aerosol formation under...

Atmos. Chem. Phys., 20, 4153–4165, 2020
https://doi.org/10.5194/acp-20-4153-2020

Research article 07 Apr 2020

Research article | 07 Apr 2020

Formation mechanisms of atmospheric nitrate and sulfate during the winter haze pollution periods in Beijing: gas-phase, heterogeneous and aqueous-phase chemistry

Pengfei Liu et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by PengFei Liu on behalf of the Authors (11 Feb 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (13 Feb 2020) by Veli-Matti Kerminen
RR by Anonymous Referee #2 (20 Feb 2020)
RR by Anonymous Referee #1 (02 Mar 2020)
ED: Publish subject to minor revisions (review by editor) (05 Mar 2020) by Veli-Matti Kerminen
AR by PengFei Liu on behalf of the Authors (06 Mar 2020)  Author's response    Manuscript
ED: Publish as is (09 Mar 2020) by Veli-Matti Kerminen
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Short summary
A vast area in China is currently going through severe haze episodes with drastically elevated concentrations of PM2.5 in winter. Nitrate and sulfate are main constituents of PM2.5, but their formations via NO2 and SO2 oxidation are still not comprehensively understood. Our results found that the gas-phase reaction of NO2 with OH and the heterogeneous hydrolysis of N2O5 play key roles in nitrate formation, and SO2 aqueous-phase oxidation with H2O2 rather than NO2 contributed greatly to sulfate.
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