Record Display for the EPA National Library Catalog


Main Title Long-path spectrophotometric instrumentation for in-situ monitoring of gaseous pollutants in the urban atmosphere : final report /
Author Prostak, Arnold. ; Prosta, Arnold ; Dy, Robert H.
Other Authors
Author Title of a Work
Dye, Robert H.
Nader, John S.
Prostak, Arnold.
CORP Author Bendix Aerospace Systems Div., Ann Arbor, Mich.
Publisher Bendix Aerospace Systems Division,
Year Published 1970
Report Number PB-205 256; CPA 22-69-55; BSR 3027; APTD-0889
Stock Number PB-205 256
OCLC Number 37496318
Additional Subjects ( Infrared spectroscopy ; Gas detectors) ; ( Air pollution ; Gas detectors) ; ( Ozone ; Gas detectors) ; Spectroscopic analysis ; Infrared spectrophotometers ; Monitors ; Urban areas ; Data processing ; Sulfur dioxide ; Computer programming ; Background discrimination ; Remote sensing ; Air pollution detection
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA APTD-0889 Headquarters Library/Washington,DC 02/18/2011
EKBD  EPA-APTD-0889 Research Triangle Park Library/RTP, NC 08/30/1997
ELBD RPS EPA APTD-0889 repository copy AWBERC Library/Cincinnati,OH 04/13/2015
ESAD  APTD-0889 Region 10 Library/Seattle,WA 01/02/1998
NTIS  PB-205 256 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 1 volume (various pagings, some folded) : illustrations, facsimiles ; 28 cm
A long-path spectrophotometric instrument is described for the quantitative measurement of ozone and other infrared absorbing gases (such as sulfur dioxide) in unconfined ambient air. A continuous variable filter wheel is used for wavelength selection from 7 to 14 microns. The instrument can be used with an active source at a range from 0.4 to over 1.6 km or it can be used to examine passively the radiant emittance from natural sources. A minicomputer is programmed to control the instrument and analyze the data in real time. The output of spectra or pollutant concentration is on a cathode ray tube, a teletypewriter, and/or punched paper tape. The instrument is sensitive to ozone concentrations ranging from 20 microgram/cu. m. (0.01 ppm) to 2000 microgram/cu. m. (1 ppm), with a measured noise of less than 4 microgram/cu. m. and a time constant of about two minutes. (Author)
Project Officer: John S. Nader. Prepared for the Department of Health, Education, and Welfare, Public Health Service, Environmental Science, National Air Pollution Control Administration by Bendix Aerospace Systems Division under Contract Number CPA 22-69-55. "October 1970."