Record Display for the EPA National Library Catalog


Main Title Chemiluminescent reactive hydrocarbon analyzer for mobile sources /
Author Fontijn, A. ; Volltrauer, H. N. ; Ellison., R.
Other Authors
Author Title of a Work
Volltrauer, H. N.
Ellison, R.
CORP Author AeroChem Research Labs., Inc., Princeton, N.J.;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Chemistry and Physics Laboratory,
Year Published 1975
Report Number EPA/650-2-75-069; TP-319a; EPA-68-02-1224; EPA-ROAP-26ACV
Stock Number PB-245 126
OCLC Number 56141861
Subjects Air--Pollution--Measurement ; Chemiluminescence ; Gas
Additional Subjects Gas detectors ; Chemiluminescence ; Hydrocarbons ; Ethylenes ; Ultraviolet spectroscopy ; Sensitivity ; Instruments ; Reaction kinetics ; Circuit diagrams ; Design ; Air pollution ; Reactivity ; Monitors ; Chemical reactivity ; Oxygen atoms ; Air pollution detection
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 650-2-75-069 Headquarters Library/Washington,DC 10/02/2014
ELBD ARCHIVE EPA 650-2-75-069 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-245 126 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 73. : illustrations ; 28 cm
A chemiluminescence method for measuring total reactivity of hydrocarbon (HC) mixtures has been developed and a prototype analyzer based on this method has been built. The difference between the OH emission intensities at 308.9 and 312.2 nm from O-atom/hydrocarbon reactions near 1 Torr is measured. The other hydrocarbons tested yield the same spectral distributions as C2H4; CH4 yields no emission. Two PMTs are used for 308.9 and 312.2 nm measurement respectively. When the apparatus is zeroed, the difference in signal from the two PMTs is insensitive to C2H2. The relative response to the individual reactive HC species can be set to give good agreement with reactivity ratings. The response to HC mixtures is additive. CO, CO2, SO2, CH4, C2H2 and NOx do not interfere with instrument response. A 1% change in (O2) causes < 1% change in signal; 3% H2O causes a 12% decrease.
Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Chemistry and Physics Laboratory. Contract 62-02-1224. "June 1975." "EPA/650-2-75-069." Includes bibliographical references.