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

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1997
Accession Number
ADA634267

Entities

People

  • Anthony J. Hynes

Organizations

  • University of Miami

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Atmospheric Chemistry
  • Atmospheric Sciences
  • Boundaries
  • Boundary Layer
  • Chemical Reactions
  • Chemistry
  • High Pressure
  • Kinetics
  • Laser Induced Fluorescence
  • Lasers
  • Measurement
  • Nitric Acid
  • Oxidation
  • Phase Studies
  • Photolysis
  • Physical Chemistry
  • Rate Of Formation

Fields of Study

  • Environmental science

Readers

  • Aerosol Science/Aerosol Physics
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Organic Chemistry