Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of gas phase titration technique as used for calibration of nitrogen dioxide chemiluminescence analyzers /
Author Ellis, E. Carol. ; Margeson., John H.
Other Authors
Author Title of a Work
Margeson, John H.
CORP Author National Environmental Research Center, Research Triangle Park, N.C. Quality Assurance and Environmental Monitoring Lab.
Publisher Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1975
Report Number EPA-650/4-75-021; EPA-ROAP-26-AAF
Stock Number PB-242 294
OCLC Number 15129316
Subjects Air--Pollution--Measurement. ; Nitrogen dioxide. ; Chemiluminescence.
Additional Subjects Nitrogen dioxide ; Gas analysis ; Calibration ; Ozone ; Chemiluminescence ; Gases ; Volumetric analysis ; Performance evaluation ; Chemiluminescence method
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 650-4-75-021 Headquarters Library/Washington,DC 05/20/2013
EJBD  EPA 650-4-75-021 Headquarters Library/Washington,DC 01/06/2015
EKBD  EPA-650/4-75-021 Research Triangle Park Library/RTP, NC 02/13/2019
NTIS  PB-242 294 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 42 pages : illustrations ; 28 cm.
A detailed method write-up describing the chemiluminescence procedure for the continuous measurement of nitrogen dioxide in ambient air was developed. Atmospheric concentrations of NO2 are measured indirectly by the chemiluminescence reaction of nitric oxide (NO) with ozone (O3). The NO2 is first thermally reduced to NO before it is reacted with O3. The reliability of measurements made by a continuous or instrumental sampling method is strongly affected by its calibration. In the chemiluminescence procedure, an NO2 analyzer is calibrated by the gas phase titration of NO with O3 that produces NO2 stoichiometrically. The gas phase titration calibration procedure was subjected to a ruggedness test. The results indicate that normal variations in such factors as reaction and mixing chamber volumes, ratio of dilution air flow to flow through the ozone generator, use of difference ozone generators with different dilution air flows, and use of different standard NO levels had little effect on the gas phase titration procedure.
"April 1975." Includes bibliographical references (page 18).