Atmospheric reactivity of gaseous dimethyl sulfate
Journal Article
·
· Environmental Science and Technology; (United States)
- Ford Motor Co., Dearborn, MI (USA)
The atmospheric reactivity of dimethyl sulfate (DMS) with a series of atmospheric species has been investigated. Upper limits to the rate constants for the homogeneous gas-phase reactions of DMS with O{sub 3}, NH{sub 3}, and H{sub 2}O have been determined by using FTIR spectroscopy and are <1.4 {times} 10{sup {minus}21}, <1.5 {times} 10{sup {minus}21}, and <1.1 {times} 10{sup {minus}23} cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, respectively. The reactivity of DMS toward ON radicals and Cl atoms has been determined by using relative rate techniques, and the rate constants for those reactions are <5 {times} 10{sup {minus}13} and (4.2 {plus minus} 0.5) {times} 10{sup {minus}13} cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, respectively. These rate constants correspond to atmospheric lifetimes ranging from >23 days with respect to reaction with OH radicals to >33 years with respect to reaction with ozone. With the possible exception of its reaction with water, for which the calculated lifetime of DMS is >2 days, these results indicate that the atmospheric fate of DMS is not determined by its homogeneous gas-phase reactions with any of the atmosphere species studied.
- OSTI ID:
- 5329088
- Journal Information:
- Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 24:3; ISSN ESTHA; ISSN 0013-936X
- Country of Publication:
- United States
- Language:
- English
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01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
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54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION MONITORING
AMMONIA
ATMOSPHERIC CHEMISTRY
CARCINOGENS
CHEMICAL REACTIONS
CHEMISTRY
CHLORINE
ELEMENTS
FOSSIL-FUEL POWER PLANTS
HALOGENS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INFRARED SPECTRA
MONITORING
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXYGEN COMPOUNDS
OZONE
PARTICLES
PARTICULATES
POWER PLANTS
RADICALS
SPECTRA
SULFATES
SULFUR COMPOUNDS
THERMAL POWER PLANTS
WATER
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION MONITORING
AMMONIA
ATMOSPHERIC CHEMISTRY
CARCINOGENS
CHEMICAL REACTIONS
CHEMISTRY
CHLORINE
ELEMENTS
FOSSIL-FUEL POWER PLANTS
HALOGENS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INFRARED SPECTRA
MONITORING
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXYGEN COMPOUNDS
OZONE
PARTICLES
PARTICULATES
POWER PLANTS
RADICALS
SPECTRA
SULFATES
SULFUR COMPOUNDS
THERMAL POWER PLANTS
WATER