Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Stability of Air Toxic Gases Listed in Title III Clean Air Act Amendments.
Author Jayanty, R. K. M. ; Jaffe, L. B. ; Albritton, J. R. ; Jackson, M. D. ; Midgett, M. R. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1992
Year Published 1992
Report Number EPA-68-02-4550; EPA/600/A-92/115;
Stock Number PB92-188812
Additional Subjects Volatile organic compounds ; Stability ; Standards ; Toxic substances ; Gas cylinders ; Mixtures ; Gases ; Chemical analysis ; Clean Air Act Amendments
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB92-188812 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/22/1992
Collation 12p
A repository of 59 organic compounds has been established by the U.S. Environmental Protection Agency (EPA) for use as gas standards in performance audits during field validation of emission concentrations from stationary sources. These compounds are listed in Title III of the 1990 Clean Air Act Amendment. The compounds are prepared in compressed gas cylinders and recyclable aluminum containers. Three concentration ranges were selected: low (20 to 200 ppb), mid-level (0.5 to 5 ppm), and high (5 to 50 ppm). The recyclable aluminum containers were only prepared in the low range, and pressures were generally below 400 psig. The compressed gas cylinders contained pressures up to 2000 psig. In this program to ensure that the concentration of each gas standard had not changed, each standard was analyzed periodically for stability. The gas mixtures were analyzed by the manufacturer before shipment. They were then analyzed upon receipt, and reanalyzed periodically to determine any change in concentration. The stability data obtained to date indicates that many compounds are stable in the compressed gas cylinders; however, some of the compounds in the recyclable containers are not stable.