pH-dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces

Halfacre, John W.; Shepson, Paul B.; Pratt, Kerri A.

doi:https://doi.org/10.5194/acp-19-4917-2019

Articles | Volume 19, issue 7

https://doi.org/10.5194/acp-19-4917-2019

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

https://doi.org/10.5194/acp-19-4917-2019

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

Articles | Volume 19, issue 7

Research article

|

11 Apr 2019

Research article |

| 11 Apr 2019

pH-dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces

John W. Halfacre, Paul B. Shepson, and Kerri A. Pratt

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Final revised paper (published on 11 Apr 2019)
Supplement to the final revised paper
Preprint (discussion started on 22 Aug 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: 'review', Anonymous Referee #1, 16 Sep 2018
- AC1: 'Response to Anonymous Referee #1', John Halfacre, 30 Jan 2019
RC2: 'Referee comment', Anonymous Referee #2, 28 Sep 2018
- AC2: 'Response to Anonymous Referee #2', John Halfacre, 30 Jan 2019
SC1: 'Comment on brine and disorder interface of ice', Thorsten Bartels-Rausch, 15 Oct 2018
- AC3: 'Response to Dr. Bartles-Rausch', John Halfacre, 30 Jan 2019

Peer-review completion

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

AR by John Halfacre on behalf of the Authors (30 Jan 2019) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (19 Feb 2019) by James Roberts

AR by John Halfacre on behalf of the Authors (01 Mar 2019) Author's response Manuscript

ED: Publish as is (07 Mar 2019) by James Roberts

AR by John Halfacre on behalf of the Authors (17 Mar 2019)

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Short summary

In this study, we found that a chemical called hydroxyl radical can help create chlorine, bromine, and iodine (i.e., halogens) from acidic frozen imitation seawater. Even more halogens are created if we also add ozone. This result helps our understanding of how halogens are released from the frozen Arctic ice and snow into the atmosphere, where they alter the atmosphere's oxidation ability.