Kinetics, Mechanism and Product Yields in the Atmospheric Oxidation of Dimethylsulfide

Abstract

Dimethylsulfide (DMS or CH3SCH3) produced by phytoplankton emission is thought to be the major source of the sulfate and methanesulfonate aerosols 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 product yields from, the OH initiated gas phase oxidation of dimethylsulfide. Our objectives are as follows: (1) the determination of the elementary rates for adduct formation, decomposition, and reaction; (2) direct confirmation of production and quantitative product yields of potential reaction products and intermediates, such as sulfur dioxide (SO2) and dimethyl sulfoxide (CH3)2SO, and (3) determination of the homogeneous and heterogeneous removal rates of the stable primary products of DMS oxidation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA551353

Entities

People

  • Anthony J. Hynes

Organizations

  • University of Miami

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Atmospheric Chemistry
  • Boundaries
  • Boundary Layer
  • Chemical Reactions
  • Chemistry
  • Decomposition
  • Laser Induced Fluorescence
  • Lasers
  • Measurement
  • Monitors
  • Nitric Acid
  • Optical Properties
  • Oxidation
  • Phase Studies
  • Water Vapor

Fields of Study

  • Environmental science

Readers

  • Marine Ecotoxicology
  • Organic Chemistry