Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of cryogenic trapping as a means for collecting organic compounds in ambient air /
Author Holdren, M. ; Rust, S. ; Smith, R. ; Koetz, J.
Other Authors
Author Title of a Work
Holdren, M.
CORP Author Battelle Columbus Labs., OH.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory,
Year Published 1985
Report Number EPA/600/4-85/002; EPA-68-02-3487
Stock Number PB85-144046
Subjects Low temperature engineering--Environmental aspects. ; Air--Pollution--United States--Measurement. ; Gas chromatography.
Additional Subjects Gas analysis ; Gas chromatography ; Traps ; Organic compounds ; Sampling ; Cryogenics ; Performance evaluation ; Laboratory equipment ; Chemical analysis ; Air pollution ; Volatile organic compounds ; Air pollution detection
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB85-144046 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 57 pages ; 28 cm
The methodology used in reduced temperature preconcentration of volatile organic compounds has been tested using a prototype automated gas chromatographic system. Mixtures of sixteen volatile organic compounds in humidified zero air were passed through a Nafion tube dryer and the organic compounds were collected on a reduced-temperature trap. The dryer reduced the water concentration without significantly affecting the integrity of the trace organic species. The selective reduction of water vapor improves the chromatography of the trace organics and likewise permits processing larger sample volumes. Statistical analysis of the data indicated that the canisters would serve as acceptable storage vessels for most of the volatile organic compounds tested.
Caption title. "Jan. 1985." "EPA/600/4-85-002." Microfiche.