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665417 
Technical Report 
Lifetimes and fates of toxic air contaminants in California's atmosphere, June 1993 
Atkinson, R; Arey, J 
1993 
CA Environmental Protection Agency Air Resources Board 
Sacramento, CA 
A032-055 
Govt Reports Announcements & Index 
GRA and I 
146 
146 
English 
The report presents information concerning the nature and rate of removal of toxic air pollutants (TAPs) from the atmosphere and any products formed; it also addresses the formation of possible TAPs in the atmosphere. It contains a comprehensive review of the atmospheric chemistry of di(2-ethylhexyl)phthalate, N-nitrosomorpholine, and dialkylnitrosamines. It also outlines the atmospheric lifetimes of 23 possible TAPs, including: hexachlorobenzene, 1,4-dichlorobenzene, dimethyl sulfate, propylene oxide, chlorobenzene, 2,4,6-trichlorophenol, benxyl chloride, acrylonitrile, toluene diisocyanates, and 1,4-dioxane. It also reviews possible atmospheric formation of TAPs. Acrolein, formaldehyde, acetaldehyde, and PAHs are shown to be present in the atmosphere largely due to atmospheric reactions. Another section describes an investigation of the mutagenicity of products of simulated atmospheric reactions of gasoline and terpenes (emitted from vegetation). These may not be major sources of ambient mutagenicity in California. 
California; Air pollution monitoring; Toxic substances; Atmospheric chemistry; Chemical reactions; Photochemical reactions; Photolysis; Organic compounds; Bioassay; Atmospheric dispersion; Mutagenicity; Environmental fate 
PB94-104270