Oxidation of Organic Sulfur Compounds

摘要: Dimethylsulfide (CH3SCH3, DMS) is one of the major natural organic sulfur compounds emitted to atmosphere [Aneja and Cooper, 1989], consequently much effort has been directed towards understanding its oxidation mechanisms particularly with OH radical [Yin et al., 1990; Tyndall Ravishankara, 1991]. All product studies on reaction DMS have carried out at room temperature no information currently available effects that temperatures such as those prevalent in Arctic or Antarctic may distributions. For example, results from field measurements remote Southern Hemisphere show a higher yield methanesulfonic acid (CH3SO3H, MSA) lower SO2 compared other world areas [Berresheim 1989, 1990], suggesting change distribution low temperatures. The various mechanistic indicate products will be very dependent atmospheric fate initially formed OH-DMS adduct also intermediate CH3S whose loss controlled by reactions either O2 trace species O3 NOx. kinetics O2, NOx are still speculative.