Record Display for the EPA National Library Catalog


Main Title Stability of Parts-per-Billion Hazardous Organic Cylinder Gases and Performance Audit Results of Source Test and Ambient Air Measurement Systems. Status Report 2.
Author Jayanty, R. K. M. ; Cooper, S. W. ; Sokash, J. A. ; Decker, C. E. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA-68-02-3767; EPA/600/2-86/003;
Stock Number PB86-144656
Additional Subjects Hazardous materials ; Gas cylinders ; Auditing ; Solid waste disposal ; Incinerators ; Air pollution ; Carbon tetrachloride ; Chloroform ; Vinyl chloride ; Halogen organic compounds ; Performance evaluation ; State government ; Stability ; Experimental design ; Tables(Data) ; Gas analysis ; Mixtures ; Sources ; Concentration(Composition) ; Quality assurance ; Air pollution detection ; Procedures ; Ethylene/perchloro ; Benzene
Library Call Number Additional Info Location Last
NTIS  PB86-144656 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 146p
A repository of 22 gaseous organic compounds at parts-per-billion (ppb) levels in compressed gas cylinders has been established by the U.S. Environmental Protection Agency (EPA). The primary objectives of this ongoing project are: (1) to provide accurate gas mixtures to EPA, state/local agencies, or their contractors for performance audits to assess the relative accuracy of source measurement systems during hazardous waste trial burn tests and ambient air monitoring programs; (2) to verify the manufacturer's certified analysis of the multicomponent gas mixtures; (3) to determine the stability of gas mixtures with time; and (4) to develop new audit materials as requested by EPA. The repository consists of 3 mixtures of 5, 8, and 9 organic compounds each. These mixtures were blended by a commercial gas supplier in aluminum cylinders in a balance gas of nitrogen. The 5-component mixture (Group I) contains carbon tetrachloride, chloroform, perchloroethylene, vinyl chloride and benzene. The 9-component mixture (Group II) includes trichloroethylene, 1,2-dichloroethane, 1,2-dibromoethane, acetonitrile, trichlorofluoromethane (F-11), dichlorodifluoromethane (F-12), bromomethane, methyl ethyl ketone and 1,1,1-trichloroethane. The 8-component mixture (Group III) includes pyridine, vinylidene chloride, 1,1,2-trichloro 1,2,2-trifluoroethane (F-113), 1,2-dichloro 1,1,2,2-tetrafluoroethane (F-114), acetone, 1,4-dioxane, toluene, and chlorobenzene. To date 41 performance audits have been initiated and 35 are complete. The results of these audits and description of the experimental procedures used for analyses and available stability data are presented in this Status Report 2.