Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Versatile gas filter correlation spectrometer
Author Burch, Darrell Eugene ; Gates, F. J. ; Gryvnak, D. A. ; Pembrook., J. D.
Other Authors
Author Title of a Work
Gates, Francis J.
Gryvnak, David A.
Pembrook, John D.
CORP Author Aeronutronic Ford Corp., Newport Beach, Calif. Aeronutronic Div.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory,
Year Published 1975
Report Number EPA 600-2-75-024; U-6201; EPA-68-02-1227; EPA-ROAP-26ACV
Stock Number PB-251 577
Subjects Spectrometers ; Air--Pollution--Measurement
Additional Subjects Gas analysis ; Spectrum analyzers ; Vinyl chloride ; Filters ; Instruments ; Exhaust gases ; Concentration(Composition) ; Automobiles ; Formaldehyde ; Ammonia ; Field tests ; Sensitivity ; Design criteria ; Performance evaluation ; Monitors ; Water ; Infrared spectrometers ; Air pollution detection ; Automobile exhaust
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB-251 577 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation viii, 68 p. : ill. ; 28 cm.
A versatile infrared analyzer employing gas-filter correlation techniques has been designed and constructed to measure concentrations of pollutant gases from a variety of sources. The spectral bandpass is determined by an adjustable grating assembly. By interchanging cell windows, radiant energy sources, gratings, interference filters, and detectors, nearly any desired spectral bandpass between 0.3 micrometers and 11 micrometers can be obtained. Spectral curves of transmittance can also be scanned. A multiple-pass sample cell provides sample paths between approximately 4 m and 40 m. Shorter sample cells can also be employed. An H2O monitor measures the concentration of H2O in the multiple-pass sample cell and automatically accounts for interference by H2O in the measurement of other gas concentrations. Tests have been performed on the measurement of formaldehyde, vinyl chloride and ammonia. The minimum detectable concentration of formaldehyde in automotive exhaust is approximately 0.05 ppm.
"EPA-600/2-75-024". EPA contract no. 68-02-1227. EPA project officer: F.M. Black. References: pp. 57.