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

Data sets

Laboratory experiments of the pH-dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces J. Halfacre, P. Shepson, and K. Pratt https://doi.org/10.18739/A22804Z17

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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.