Record Display for the EPA National Library Catalog


Main Title Evaluation of a continuous colorimetric method for measurement of nitrogen dioxide in ambient air /
Author Margeson, John H. ; Fuerst., Robert G.
Other Authors
Author Title of a Work
Fuerst, R. G.
CORP Author Environmental Protection Agency, Research Triangle Park, N.C.
Publisher Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1975
Report Number EPA-650/4-75-022
Stock Number PB-243 462
OCLC Number 15129224
Subjects Air--Pollution--Measurement ; Nitrogen dioxide ; Colorimetry
Additional Subjects Nitrogen dioxide ; Colorimetric analysis ; Air pollution detection ; Gas analysis ; Gas detectors ; Calibrating ; Continuous sampling ; Gas sampling
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 650-4-75-022 Headquarters Library/Washington,DC 01/06/2015
ELBD ARCHIVE EPA 650-4-75-022 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-243 462 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 42 p. : ill. ; 28 cm.
A continuous colorimetric procedure for the measurement of nitrogendioxide in ambient air was evaluated. The evaluation included laboratory experiments, using two different azo-dye-forming absorbing solutions in a Technicon instrument, to test the reliability of calibration techniques. Other procedures that are important in the use of the method were evaluated, and a literature search was conducted to identify possible interferents. The results show that static calibration is unreliable; dynamic calibration using a reliable NO2-generation system is required. Ozone was found to be a significant negative interferent. A detailed method write-up, based on dynamic calibration specifications, was prepared to describe the use of the continuous colorimetric procedure.
"April 1975."