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Main Title

Modeling of simulated photochemical smog with kinetic mechanisms. interim report appendix / Volume 2. :

Author

Whitten, G. Z. ; Hogo, H. ; Meldgin, M. J. ; Killus, J. P. ; Bekowies, P. J.

Other Authors

Author	Title of a Work
Killus, J. P.
Meldgin, M. J.
Hogo, H.
Bekowies, P. J.

CORP Author

Systems Applications, Inc., San Rafael, CA.;Environmental Sciences Research Lab., Research Triangle Park, NC.

Publisher

U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,

Year Published

1979

Report Number

EPA-600/3-79-001b; EF78-121B; EPA-68-02-2428

Stock Number

PB-290 508

Subjects

Photochemical smog

Additional Subjects

Air pollution ; Mathematical models ; Reaction kinetics ; Photochemical reactions ; Graphs(Charts) ; Test chambers ; Smog ; Formaldehyde ; Acetaldehyde ; Ethylene ; Propylene ; Butanes ; Butenes ; Ozone ; Nitrogen oxides ; Concentration(Composition) ; Butane/dimethyl ; Atmospheric chemistry ; Chemical reaction mechanisms

Internet Access

Description	Access URL
	https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100LZE6.PDF

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB-290 508	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

vii, 406 p. : ill. ; 28 cm.

Abstract

Computer modeling of smog chamber data is discussed in three parts. First, a series of detailed chemical mechanisms were developed to describe the photochemical formation of ozone from nitrogen oxides and the following organic compounds (alone and in various combinations): formaldehyde, acetaldehyde, ethylene, propylene, butane, 1-butene, trans-2-butene, and 2,3-dimethylbutane. Second, a generalized kinetic scheme intended for use in models simulating the formation of ozone in urban atmospheres was refined. The generalized mechanism includes a condensed version of the detailed mechanisms developed in the first part plus a semi-empirical scheme to describe the oxidation of aromatic hydrocarbons. Third, the effects of smog chambers on ozone formation were examined. For this part of the study, similar experiments using nitrogen oxides and propylene in eight different smog chambers were simulated using the detailed propylene mechanism. The main chamber effects identified thus far are apparently due to nitrogen oxides degassing from the walls during experiments and differences between chambers in the spectral distribution of ultraviolet irradiation. Volume 2 contains graphs of measured and simulated pollutant concentrations for many smog chamber experiments.

Notes

"Contract No. 68-02-2428." "EPA-600/3-79-001b." "January 1979." "Project Officer Marcia C. Dodge."

Place Published

Research Triangle Park, N.C.

Supplementary Notes