Record Display for the EPA National Library Catalog


Main Title Urban Air Shed Photochemical Simulation Model Study. Volume I. Development and Evaluation. Appendix B. Generalized Mechanism for Describing Atmospheric Photochemical Reactions.
Author Hecht., T. A. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.;Environmental Protection Agency, Washington, D.C. Office of Research and Development.
Year Published 1973
Report Number EPA-68-02-0339; EPA-R4-73-030c;
Stock Number PB-234 975
Additional Subjects Photochemical reactions ; Atmospheric models ; Air pollution ; Hydrocarbons ; Gases ; Reaction kinetics ; Chemical reactions ; Proving ; Nitrogen oxides ; Carbon monoxide ; Ozone ; Nitrous acid ; Water vapor ; Propylene ; Toluene ; Butanes ; Ethane ; Butenes ; Atmospheric chemistry ; Chemical reaction mechanisms ; Hydroxyl radical ; Smog chambers ; Automobile exhaust
Library Call Number Additional Info Location Last
NTIS  PB-234 975 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 88p
The main purpose of the current contract effort is the development and validation of a simulation model for estimating ground level concentrations of photochemical pollutants. A major component of the model is a generalized kinetic mechanism capable of describing atmospheric chemical reactions developed by Prof. John H. Seinfeld at the California Institute of Technology. The authors wished to modify the treatment of nitrous acid in the mechanism, to include additional categories of lumped hydrocarbons and their reactions, to improve means for estimating the generalized stoichiometric coefficients, and to assess more fully the mechanism's validity. It was the purpose of this effort to carry out validation of the mechanism, as modified, for a variety of reactive systems, including single hydrocarbons, binary mixtures, and auto exhaust. The mechanism provides an adequate, perhaps good, description of smog chamber kinetics.