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Main Title Chemiluminescence Measurement of Reactivity Weighted Ethylene-Equivalent Hydrocarbons.
Author Black, Frank M. ; High, Larry E. ; Fontijn., Arthur ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, N.C. ;AeroChem Research Labs., Inc., Princeton.
Year Published 1977
Report Number EPA/600/J-77/080;
Stock Number PB-278 339
Additional Subjects Hydrocarbons ; Gas detectors ; Exhaust emissions ; Chemiluminescence ; Gas chromatography ; Design criteria ; Performance evaluation ; Air pollution ; Concentration(Composition) ; Reprints ; Automobile exhaust ; Air pollution detection
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NTIS  PB-278 339 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Abstract A reactive hydrocarbon analyzer (RHA), based on the chemiluminescent reaction of hydrocarbons with oxygen atoms, is used to provide a rapid indication of reactivity weighted hydrocarbon mass in automobile exhaust. Samples are reported by their ethylene-equivalent concentration--the concentration of ethylene which would give the same mass-reactivity product as the exhaust hydrocarbon mixture. These are compared to ethylene-equivalent concentrations obtained by the much more cumbersome procedure of weighting the individual sample hydrocarbons, determined by gas chromatography (GC), by their respective relative short-term photochemical reactivities, summing these results, and equating them to ethylene. Procedures are also described to eliminate a negative interference to the RHA method resultant from H2O quenching of the chemiluminescence emitter. The RHA and GC ethylene-equivalent concentrations correlate within 5%. (Copyright (c) 1977 by the American Chemical Society.)
Supplementary Notes Prepared in cooperation with AeroChem Research Labs., Inc., Princeton, N.J.
Availability Notes Pub. in Environmental Science and Technology, v11 n6 p597-601 Jun 77.
NTIS Title Notes Journal article.
Title Annotations Reprint: Chemiluminescence Measurement of Reactivity Weighted Ethylene-Equivalent Hydrocarbons.
PUB Date Free Form 7 Jan 77
Category Codes 14B; 68A; 99A
NTIS Prices Not available NTIS
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 323736418
Origin NTIS
Type CAT