Record Display for the EPA National Library Catalog


Main Title Environmental Chamber Studies of Maximum Incremental Reactivities of Volatile Organic Compounds.
Author Carter, W. P. L. ; Pierce, J. A. ; Malkina, I. L. ; Luo, D. ; Long, W. D. ;
CORP Author California Univ., Riverside. Statewide Air Pollution Research Center. ;California State Air Resources Board, Sacramento. ;South Coast Air Quality Management District, El Monte, CA. ;Environmental Protection Agency, Washington, DC.;Coordinating Research Council, Inc., Atlanta, GA.
Publisher 1 Apr 93
Year Published 1993
Report Number ARB-A032-0692 ;C91323; CRC-APRAC-ME-9;
Stock Number PB93-207447
Additional Subjects Photolysis ; Air pollution ; Chemical analysis ; Ozone ; Photochemical oxidants ; Oxidation ; Combustion chambers ; Carbon monoxide ; Nitrogen oxides ; Hydroxides ; Smog ; Photochemistry ; Volatile organic compounds ; MIR(Maximum incremental reactivity)
Library Call Number Additional Info Location Last
NTIS  PB93-207447 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 229p
The effects of 36 representative volatile organic compounds (VOCs) and CO on ozone formation, NO oxidation, and OH radical levels were measured in a series of environmental chamber experiments representing conditions where VOCs have the greatest effect on photochemical ozone formation. The experiments consisted of repeated 6-hour indoor chamber irradiations of a simplified mixture of ozone precursors with NOx in excess, alternating with runs with varying amounts of a test VOC added. The VOCs studied included representative alkanes, alkenes, aromatic hydrocarbons, aldehydes, alcohols, ethers, alcohol ethers, and siloxanes. CO, Acetone and 2-chloromethyl-3-chloropropene were also studied. Reactions of formaldehyde, acetone, the methylbenzenes and the alkenes had the largest positive effects on OH radical levels, and because of this they caused the most NO oxidation and ozone formation per molecule reacted. Reactions of the siloxanes and the C(6+) n-alkanes had the most inhibiting effects on radicals, causing them to inhibit NO oxidation and ozone formation under the conditions of these experiments. The other compounds had smaller and usually negative effects on OH radicals, and had moderate but positive effects on ozone formed and NO oxidized. Information was also obtained on amounts of NO oxidation caused directly by the reactions of the added VOCs or their products.