Production of the Atmospheric Oxidant Radicals OH and HO2 from the Ozonolysis of Alkenes

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Production of the Atmospheric Oxidant Radicals OH and HO² from the Ozonolysis of Alkenes

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Published copy (DOI)

10.1007/978-94-007-5034-0_12

Author(s)

William J. Bloss
M. S. Alam
A. R. Rickard
M. Camredon
K. P. Wyche
T. Carr
P. S. Monks

Department/unit(s)

Chemistry

Publication details

Title of host publication	NATO Science for Peace and Security Series C: Environmental Security
Date	Published - 9 Sep 2013
Pages	151-162
Number of pages	12
Volume	120
Original language	English

Publication series

Name	NATO Science for Peace and Security Series C: Environmental Security
Volume	120
ISSN (Print)	18746519

Abstract

The reactions of ozone with alkenes are of importance within atmospheric chemistry as a non-photolytic source of the oxidant radicals OH, HO₂ and RO₂. While OH yields are relatively well constrained, few data exist for production of HO₂ or RO₂. We report direct measurements of total radical yields from a range of small (C₂-C₅) alkenes, using LIF and PERCA techniques within large simulation chamber experiments. OH yields are found to be consistent with established understanding, while HO₂ yields are substantially smaller than previous measurements suggest, but in good agreement with those assumed within current atmospheric chemical mechanisms.

Research areas

Alkenes, HO, OH, Ozonolysis, Troposphere

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