Kinetics, Mechanism and Product Yields in the Atmospheric Oxidation of Dimethylsulfide
ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE MIAMI FL DIV OF MARINE AND ATMOSPHERIC SCIENCE
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Dimethylsulfide DMS, CH3SCH3 produced by phytoplankton emission is thought to be the major source of the sulfate and methanesulfonate aerosol found in the marine boundary layer. An understanding of the mechanism of formation of these aerosols is critical to understanding the factors which control visibility in the marine boundary layer. The primary objective of this research effort is the determination of the detailed mechanism of, and final products yields from, the OH initiated gas phase oxidation of dimethylsulfide DMS. Our objectives include the determination of a the effective rate coefficients for the OH initiated oxidation of DMS under atmospheric conditions, b the elementary rates for adduct formation, decomposition and reaction, b direct confirmation of production, and quantitative product yields of potential reaction products and intermediates such sulfur dioxide SO2 and dimethyl sulfoxide DMSO CH32SO.
- Atmospheric Physics
- Physical Chemistry