Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 19, issue 7
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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Latest update: 25 Apr 2026
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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.
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