Importance of sulfate radical anion formation and chemistry in heterogeneous OH oxidation of sodium methyl sulfate, the smallest organosulfate

Kwong, Kai Chung; Chim, Man Mei; Davies, James F.; Wilson, Kevin R.; Chan, Man Nin

doi:https://doi.org/10.5194/acp-18-2809-2018

Articles | Volume 18, issue 4

https://doi.org/10.5194/acp-18-2809-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-2809-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 4

Research article

|

27 Feb 2018

Research article |

| 27 Feb 2018

Importance of sulfate radical anion formation and chemistry in heterogeneous OH oxidation of sodium methyl sulfate, the smallest organosulfate

Kai Chung Kwong, Man Mei Chim, James F. Davies, Kevin R. Wilson, and Man Nin Chan

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Final revised paper (published on 27 Feb 2018)
Preprint (discussion started on 24 Oct 2017)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of Kwong et al.', Anonymous Referee #3, 20 Nov 2017
- AC2: 'Response to referee 3', ManNin Chan, 17 Jan 2018
RC2: 'Comments on Kwong et al.', Anonymous Referee #1, 21 Nov 2017
- AC3: 'Response to referee 1', ManNin Chan, 17 Jan 2018
RC3: 'review of Kwong et al.', Anonymous Referee #2, 19 Dec 2017
- AC4: 'Response to referee 2', ManNin Chan, 17 Jan 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by ManNin Chan on behalf of the Authors (18 Jan 2018) Manuscript

ED: Publish as is (22 Jan 2018) by Alexander Laskin

AR by ManNin Chan on behalf of the Authors (23 Jan 2018)

Short summary

To date, it remains unclear how organosulfates evolve over time in the atmosphere. We demonstrate that heterogeneous OH oxidation of sodium methyl sulfate, the smallest organosulfate found in atmospheric aerosols, is efficient. The oxidation can lead to the formation of sulfate radical anion and produce inorganic sulfate. In addition to OH radicals, sulfate radical anion chemistry can play a role in determining the evolution of sodium methyl sulfate and other organosulfates during oxidation.