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5241282 
Technical Report 
Kinetics, Mechanism and Product Yields in the Atmospheric Oxidation of Dimethylsulfide 
Hynes, AJ 
1997 
LONG-TERM GOALS. 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). OBJECTIVES. Our objectives include the determination of the elementary rates for adduct formation, decomposition and reaction. Direct confirmation of production, and quantitative product yields of potential reaction products such sulfur dioxide (SO2) and dimethyl sulfoxide (DMSO: (CH3)2SO). Determination of the homogeneous and heterogeneous removal rates of the stable primary products of DMS oxidation.