Articles | Volume 19, issue 16
Atmos. Chem. Phys., 19, 10817–10828, 2019
https://doi.org/10.5194/acp-19-10817-2019
Atmos. Chem. Phys., 19, 10817–10828, 2019
https://doi.org/10.5194/acp-19-10817-2019

Research article 27 Aug 2019

Research article | 27 Aug 2019

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

Pablo Corral Arroyo et al.

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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.
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