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Issue 28, 2009
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HOx radical regeneration in the oxidation of isoprene

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Abstract

We propose, and quantify from first principles, two novel HOx-regenerating unimolecular reactions in isoprene oxidation, which are estimated to yield in pristine tropical forest conditions about 0.7 HO2 and 0.03 OH radicals per isoprene oxidized; it is further argued that the photolabile coproduct of HO2 can be a major source of OH, with a yield of the order of 1. The newly proposed chemistry could provide a rationalization for the unexpectedly high OH concentrations often observed in forested environments, such as over the Amazon forest in the recent Gabriel campaign.

Graphical abstract: HOx radical regeneration in the oxidation of isoprene

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Publication details

The article was received on 29 Apr 2009, accepted on 26 May 2009 and first published on 05 Jun 2009


Article type: Communication
DOI: 10.1039/B908511D
Citation: Phys. Chem. Chem. Phys., 2009,11, 5935-5939

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    HOx radical regeneration in the oxidation of isoprene

    J. Peeters, T. L. Nguyen and L. Vereecken, Phys. Chem. Chem. Phys., 2009, 11, 5935
    DOI: 10.1039/B908511D

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