Record Display for the EPA National Library Catalog


Main Title Investigation of important hydroxyl radical reactions in the perturbed troposphere /
Author Davis, D. D.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1977
Report Number PB274012; EPA-600/3-77-111; EPA-R-804629
Stock Number PB-274 012
OCLC Number 52420564
Subjects Oxidation ; Hydroxyl group ; Chemical kinetics ; Hydrocarbons
Additional Subjects Reaction kinetics ; Air pollution ; Troposphere ; Chemical reactions ; Fluorescence ; Hydrocarbons ; Benzene ; Toluene ; Xylenes ; Ethylene ; Acetylene ; Propylene ; Butene ; Fluorides ; Photolysis ; Hydroxyl radicals ; Atmospheric chemistry ; Benzene/ethyl ; Benzene/propyl ; Benzene/hexafluoro ; Benzene/pentafluoro ; Time of flight mass spectrometry
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-3-77-111 Headquarters Library/Washington,DC 01/30/2012
EJBD  EPA 600-3-77-111 c.1 Headquarters Library/Washington,DC 01/27/2014
ELBD RPS EPA 600-3-77-111 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ESAD  EPA 600-3-77-111 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-274 012 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 78 p. : ill. ; 28 cm.
The flash-photolysis resonance fluorescence technique was used to study the reaction kinetics of hydroxyl radicals with ten aromatic and six olefinic hydrocarbons at 298 K and several diluent gas pressures. The aromatic compounds that were studied include benzene, toluene, ethylbenzene, n-propylbenzene, isopropylbenzene, hexafluorobenzene, n-propyl pentafluorobenzene, and o-, m-, and p-xylenes; and the olefins include ethylene, acetylene, propylene, 1-butene, cis-2-butene, and tetramethylethylene. Based on our extensive data on OH-substituted aromatic hydrocarbon reactions, it has been inferred that addition of hydroxyl radicals to the aromatic ring is the dominant reaction in these systems. In the case of OH-olefin reactions, addition of OH to the double bond seems to be a prominent path for the heavier unsaturates. From these rate constant data, the lifetimes of all these hydrocarbons in the lower troposphere has been calculated. Attempts were made to understand the mechanisms involved in the reactions of OH with substituted aromatic hydrocarbons, using the technique of laser flash photolysis, time-of-flight mass spectrometry.
"EPA-600/3-77-111 " "October 1977." PB 274 012--NTIS. Includes bibliographical references (p. 75-77).