Organic peroxy radical chemistry in oxidation flow reactors and environmental chambers and their atmospheric relevance

Peng, Zhe; Lee-Taylor, Julia; Orlando, John J.; Tyndall, Geoffrey S.; Jimenez, Jose L.

doi:https://doi.org/10.5194/acp-19-813-2019

Articles | Volume 19, issue 2

https://doi.org/10.5194/acp-19-813-2019

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

https://doi.org/10.5194/acp-19-813-2019

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

Articles | Volume 19, issue 2

Research article

|

22 Jan 2019

Research article |

| 22 Jan 2019

Organic peroxy radical chemistry in oxidation flow reactors and environmental chambers and their atmospheric relevance

Zhe Peng, Julia Lee-Taylor, John J. Orlando, Geoffrey S. Tyndall, and Jose L. Jimenez

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Final revised paper (published on 22 Jan 2019)
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Preprint (discussion started on 24 Sep 2018)
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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 of “Organic peroxy radical chemistry in oxidation flow reactors and environmental chambers and their environmental relevance”, Peng et al., Atmos. Chem. Phys. Discuss., 2018', Anonymous Referee #1, 22 Oct 2018
RC2: 'Review of Peng et al', Anonymous Referee #2, 29 Oct 2018
AC1: 'Responses to the comments of both reviewers', Zhe Peng, 14 Dec 2018

Peer-review completion

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

AR by Zhe Peng on behalf of the Authors (16 Dec 2018) Author's response Manuscript

ED: Publish as is (08 Jan 2019) by Dwayne Heard

AR by Zhe Peng on behalf of the Authors (08 Jan 2019)

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Short summary

The use of oxidation flow reactors (OFRs) has been rapidly increasing. We investigate organic peroxy radical (RO₂) chemistry in OFRs by kinetic modeling. It is found that, at low NO, UV intensity should be limited to avoid high radical levels leading to significant reaction of RO₂ with OH and negligible RO₂ isomerization, both of which are atmospherically irrelevant. We also develop two RO₂ fate estimators (for general use and for OFRs) to aid experiment design and interpretation.