Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 18, issue 19
Articles | Volume 18, issue 19
https://doi.org/10.5194/acp-18-14005-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-18-14005-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 19
Research article
 | 
02 Oct 2018
Research article |  | 02 Oct 2018

Reactive quenching of electronically excited NO2∗ and NO3∗ by H2O as potential sources of atmospheric HOx radicals

Terry J. Dillon and John N. Crowley

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Latest update: 28 Oct 2025
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Short summary
The reactions between electronically excited NO2* and NO3* with water vapour were studied using laser excitation of NO2 (532–647 nm) or NO3 (623–662 nm). No evidence for OH production was observed in either reaction. The reaction of NO2* with water is not a significant source of OH in the atmosphere.
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