The BrO+Ch3O2 reaction: Kinetics and role in the atmospheric ozone budget

Details The BrO+Ch3O2 reaction: Kinetics and role in the atmospheric ozone budget The BrO+Ch3O2 reaction: Kinetics and role in the atmospheric ozone budget

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.2745a&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 22, p. 2745-2748

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18

Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties

Scientific paper

Using the discharge flow method with detection of species by mass spectrometry and laser-induced fluorescence, the kinetics of the reaction BrO+CH3O2->products has been studied at 298 K. The rate constant obtained is (5.7+/-0.6)×10-12cm3molecule-1s-1. The mechanism of the reaction has been also investigated. These laboratory data are used to discuss the possible impact of this reaction on the ozone budget in different parts of the atmosphere. The reaction is likely to be negligible in the stratosphere, but is potentially significant in the remote marine boundary layer. The BrO+CH3O2 reaction, together with other BrO+RO2 reactions, may also significantly contribute to the ozone loss events observed in the Arctic troposphere in spring.

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