Mechanistic study of the formation of ring-retaining and  ring-opening products from the oxidation of aromatic  compounds under urban atmospheric conditions

Zaytsev, Alexander; Koss, Abigail R.; Breitenlechner, Martin; Krechmer, Jordan E.; Nihill, Kevin J.; Lim, Christopher Y.; Rowe, James C.; Cox, Joshua L.; Moss, Joshua; Roscioli, Joseph R.; Canagaratna, Manjula R.; Worsnop, Douglas R.; Kroll, Jesse H.; Keutsch, Frank N.

doi:https://doi.org/10.5194/acp-19-15117-2019

Articles | Volume 19, issue 23

https://doi.org/10.5194/acp-19-15117-2019

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

https://doi.org/10.5194/acp-19-15117-2019

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

Articles | Volume 19, issue 23

Research article

|

13 Dec 2019

Research article |

| 13 Dec 2019

Mechanistic study of the formation of ring-retaining and ring-opening products from the oxidation of aromatic compounds under urban atmospheric conditions

Alexander Zaytsev, Abigail R. Koss, Martin Breitenlechner, Jordan E. Krechmer, Kevin J. Nihill, Christopher Y. Lim, James C. Rowe, Joshua L. Cox, Joshua Moss, Joseph R. Roscioli, Manjula R. Canagaratna, Douglas R. Worsnop, Jesse H. Kroll, and Frank N. Keutsch

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Interactive discussion

Status: closed

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

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RC1: 'Review Zaytsev et al.', Anonymous Referee #1, 20 Aug 2019
- AC1: 'Response to Reviewer 1', Alexander Zaytsev, 05 Nov 2019
RC2: 'Review', Anonymous Referee #2, 04 Sep 2019
- AC2: 'Response to Reviewer 2', Alexander Zaytsev, 05 Nov 2019

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

AR by Alexander Zaytsev on behalf of the Authors (05 Nov 2019) Author's response Manuscript

ED: Publish as is (14 Nov 2019) by Alexander Laskin

AR by Alexander Zaytsev on behalf of the Authors (14 Nov 2019) Manuscript

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Short summary

Aromatic hydrocarbons contribute significantly to the production of tropospheric ozone and secondary organic aerosol (SOA). Here later-generation low-volatility oxygenated products from toluene and 1,2,4-TMB oxidation by OH are detected in the gas and particle phases. We show that these products, previously identified as highly oxygenated molecules (HOMs), are formed in more than one pathway with differing numbers of reaction steps with OH. They also make up a significant fraction of SOA.