Record Display for the EPA National Library Catalog


Main Title Development of a gas laser system to measure trace gases by long path absorption techniques : Volume I - Gas laser system modifications for ozone monitoring. Final report /
Author Craig, S. E.
CORP Author General Electric Co., Pittsfield, Mass. Ordnance Systems.;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab.
Publisher U.S. Environmental Protection Agency,
Year Published 1974
Report Number EPA-650/ 2-74-046a; OS-74-13; EPA-68-02-0757
Stock Number PB-236 678
OCLC Number 09623652
Subjects Air pollution ; Gas detectors ; Remote sensing ; Ozone
Additional Subjects Gas lasers ; Remote sensing ; Gas detectors ; Ozone ; Monitors ; Air pollution ; Design ; Infrared spectroscopy ; Spectroscopic analysis ; Signal processing ; Carbon dioxide lasers ; Carbon dioxide ; Water vapor ; Ethylene ; Ammonia ; Absorption spectra ; Air pollution detection ; Long path infrared spectroscopy
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA-650-2-74-046-a Headquarters Library/Washington,DC 07/17/2014
EKBD  EPA-650/2-74-046a Research Triangle Park Library/RTP, NC 11/16/2016
ELBD ARCHIVE EPA-650-2-74-046-a Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-236 678 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 142 pages : illustrations, diagrams ; 28 cm
Modifications of a gas laser system for long path monitoring of trace atmospheric constituents by infrared absorption are described. Modifications were made in preparation for an ozine field measurement program reported in Volume II wherein path monitor data were compared with those from a point monitor moved along the optical path. System modifications included incorporating a digital signal processor in the system and a spatial filter in the laser beam. Spectral studies of ozone, carbon dioxide, water vapor, ethylene and ammonia are presented in connection with the selection of laser wavelengths used in the system to discriminate ozone effects from interferences. Design considerations and a proposed configuration for an isotopic CO2 laser are presented.
"EPA 650-2-74-046a." "June 1974."