Halogen activation and radical cycling initiated by imidazole-2-carboxaldehyde photochemistry

Corral Arroyo, Pablo; Aellig, Raffael; Alpert, Peter A.; Volkamer, Rainer; Ammann, Markus

doi:https://doi.org/10.5194/acp-19-10817-2019

Articles | Volume 19, issue 16

https://doi.org/10.5194/acp-19-10817-2019

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

https://doi.org/10.5194/acp-19-10817-2019

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

Articles | Volume 19, issue 16

Research article

|

27 Aug 2019

Research article |

| 27 Aug 2019

Halogen activation and radical cycling initiated by imidazole-2-carboxaldehyde photochemistry

Pablo Corral Arroyo, Raffael Aellig, Peter A. Alpert, Rainer Volkamer, and Markus Ammann

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Final revised paper (published on 27 Aug 2019)
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Preprint (discussion started on 28 Mar 2019)
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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: 'Good paper presenting another potential source of halogens', Anonymous Referee #1, 28 Mar 2019
- AC1: 'Response to reviewer 1', Markus Ammann, 02 Jul 2019
RC2: 'Review of "Halogen activation and radical cycling initiated by imidazole-2-carboxaldehyde photochemistry"', Anonymous Referee #2, 16 Apr 2019
- AC2: 'Response to reviewer 2', Markus Ammann, 02 Jul 2019

Peer-review completion

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

AR by Markus Ammann on behalf of the Authors (11 Jul 2019) Author's response Manuscript

ED: Publish as is (22 Jul 2019) by Dwayne Heard

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Short summary

Oxidation of bromide and iodide is an important process in the troposphere that leads to gas-phase halogen compounds which impact the oxidation capacity of the atmosphere. Imidazole-2-carboxaldehyde (IC), an aromatic carbonyl, is a product of the multiphase chemistry of glyoxal (an oxidation product of isoprene), a major biogenic volatile organic compound. In this study we demonstrate that IC photochemistry leads to efficient oxidation of bromide and iodide and liberation of halogen compounds.