Oxidation of atmospheric reduced sulphur compounds: perspective from laboratory studies

Results of laboratory experiments which address the course of the OH + DMS (dimethyl sulphide) reaction in the atmosphere are presented. It is shown that OH reacts via a complex sequence of reactions to produce CH3S and other products, and argued that NO3 is unlikely to be an important oxidizer of D...

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Published inPhilosophical transactions of the Royal Society of London. Series B. Biological sciences Vol. 352; no. 1350; pp. 171 - 182
Main Authors Ravishankara, A. R., Rudich, Yinon, Talukdar, Ranajit, Barone, Stephen B.
Format Journal Article
LanguageEnglish
Published The Royal Society 28.02.1997
Subjects
Adducts
Aerosols
Atmospherics
Atoms
Coefficients
Oxidation
Reaction mechanisms
Sulfur
Temperature dependence
Troposphere
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Summary:Results of laboratory experiments which address the course of the OH + DMS (dimethyl sulphide) reaction in the atmosphere are presented. It is shown that OH reacts via a complex sequence of reactions to produce CH3S and other products, and argued that NO3 is unlikely to be an important oxidizer of DMS in the marine boundary layer (MBL) because it is very efficiently taken up by water droplets. A simplified mechanism for the oxidation of DMS in the troposphere is presented. This mechanism explains some of the field observations on the end products of DMS oxidation and their variations with temperature.
Bibliography:1Also associated with the Department of Chemistry and Bio-chemistry, University of Colorado, Boulder, CO 80309, USA.
istex:78A2817A1847BB92B0F355CFC39372CE39C28781
ark:/67375/V84-JD2T8WZD-C
Discussion Meeting Issue 'Atmospheric chemistry of sulphur in relation to aerosols, clouds, and climate' organized and edited by R. A. Cox, C. N. Hewitt, P. S. Liss, J. E. Lovelock, K. R. Shine and B. A. Thrush
ISSN:0962-8436
1471-2970
DOI:10.1098/rstb.1997.0012