Issue 36, 2014

Competing atmospheric reactions of CH2OO with SO2 and water vapour

Abstract

H2SO4 formation from the reaction CH2OO + SO2 has been measured as a function of the water vapour concentration for close to atmospheric conditions. Second-order kinetics with regard to water indicates a preferred reaction of CH2OO with the water dimer. The obtained kinetic parameters lead to the conclusion that the atmospheric fate of CH2OO is dominated by the reaction with water vapour. A comparison with results from CH3CHOO and (CH3)2COO indicates a structure dependent reactivity of stabilized Criegee intermediates.

Graphical abstract: Competing atmospheric reactions of CH2OO with SO2 and water vapour

Supplementary files

Article information

Article type
Communication
Submitted
02 Jun 2014
Accepted
29 Jul 2014
First published
01 Aug 2014

Phys. Chem. Chem. Phys., 2014,16, 19130-19136

Competing atmospheric reactions of CH2OO with SO2 and water vapour

T. Berndt, J. Voigtländer, F. Stratmann, H. Junninen, R. L. Mauldin III, M. Sipilä, M. Kulmala and H. Herrmann, Phys. Chem. Chem. Phys., 2014, 16, 19130 DOI: 10.1039/C4CP02345E

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