Photooxidants from brown carbon and other chromophores in illuminated particle extracts

Kaur, Richie; Labins, Jacqueline R.; Helbock, Scarlett S.; Jiang, Wenqing; Bein, Keith J.; Zhang, Qi; Anastasio, Cort

doi:https://doi.org/10.5194/acp-19-6579-2019

Articles | Volume 19, issue 9

https://doi.org/10.5194/acp-19-6579-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-6579-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 9

Research article

| Highlight paper

|

17 May 2019

Research article | Highlight paper |

| 17 May 2019

Photooxidants from brown carbon and other chromophores in illuminated particle extracts

Richie Kaur, Jacqueline R. Labins, Scarlett S. Helbock, Wenqing Jiang, Keith J. Bein, Qi Zhang, and Cort Anastasio

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Final revised paper (published on 17 May 2019)
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Preprint (discussion started on 10 Dec 2018)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'REVIEWER REPORT', Anonymous Referee #1, 21 Dec 2018
RC2: 'Reviewer summary of Photooxidants from Brown Carbon and Other Chromophores in Illuminated Particle Extracts', Anonymous Referee #2, 02 Jan 2019
RC3: 'Comment for acp-2018-1258', Anonymous Referee #3, 08 Jan 2019
AC1: 'Author Responses to Reviewers' Comments', Cort Anastasio, 23 Apr 2019

Peer-review completion

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

AR by Anna Wenzel on behalf of the Authors (24 Apr 2019) Author's response

ED: Publish as is (25 Apr 2019) by Manabu Shiraiwa

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Short summary

We measured hydroxyl radical (^•OH), singlet oxygen (¹O₂*), and organic triplets (³C*) in illuminated aqueous particle extracts. After measuring the impact of dilution on oxidant concentrations, we extrapolated our results to predict them in ambient particles – ¹O₂* and ³C* concentrations appear to be greatly enhanced, while ^•OH appears largely unchanged. Two of these oxidants (¹O₂*, ³C*) are not yet included in atmospheric models, and our results make it possible to include them in the future.