Photodissociation of Methyl Chloride and Methyl Bromide in the Atmosphere

Journal Article · Tue Nov 30 23:00:00 EST 1976 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL003i012p00757· OSTI ID:7326481

Robbins, D E

Methyl chloride (CH/sub 3/Cl) and methyl bromide (CH/sub 3/Br) have been suggested to be significant sources of the stratospheric halogens. The breakup of these compounds in the stratosphere by photodissociation or reaction with OH releases halogen atoms which catalytically destroy ozone. Experimental results are presented for ultra-violet photoabsorption cross sections of CH/sub 3/Cl and CH/sub 3/Br. Calculations are presented of loss rates for the methyl halides due to photodissociation and reaction with OH and of mixing ratios of these species in the stratosphere. (AIP)

• Research Organization: NASA-Lyndon B. Johnson Space Center, Houston, Texas 77058
• OSTI ID: 7326481
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 3:12; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
BROMINATED ALIPHATIC HYDROCARBONS
CHEMICAL REACTIONS
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
DECOMPOSITION
EARTH ATMOSPHERE
HALOGENATED ALIPHATIC HYDROCARBONS
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
POLLUTION
STRATOSPHERE