Record Display for the EPA National Library Catalog


Main Title Supercritical fluid extraction : gas chromatography of volatile organic compounds (VOC) from Tenax devices /
Author Wright, Bob W. ; Kopriva, A. J. ; Smith, R. D.
Other Authors
Author Title of a Work
Kopriva, Andrew J.
Smith, Richard D.
CORP Author Battelle Pacific Northwest Labs., Richland, WA.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory,
Year Published 1987
Report Number REPT-2311107118; EPA-68-02-4127; EPA/600/4-87/033
Stock Number PB88-124300
Subjects Gas chromatography ; Solvent extraction ; Air--Purification
Additional Subjects Gas chromatography ; Adsorbents ; Extraction ; Methodology ; Sampling ; Instruments ; Air pollution control ; Supercritical fluids ; Volatile organic compounds ; Extraction chromatography ; Air sampling
Library Call Number Additional Info Location Last
NTIS  PB88-124300 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 80 pages : illustrations ; 28 cm
The report describes the development and evaluation of on-line supercritical fluid extraction-gas chromatography instrumentation and methodology for the analysis of volatile organic compounds (VOC) from adsorbent sampling devices. Supercritical fluid extraction offers potential advantages for the removal and transport of organic components from adsorbent matrices including rapid and efficient extraction at mild temperatures. Extraction at mild temperatures eliminates potential problems such as analyte decomposition that can be encountered with the high temperatures needed for thermal desorption analysis. Since a major objective of the study was to develop viable instrumentation and methodology, a relatively detailed description of the instrumentation design requirements and present limitations are discussed. The results of several series of methodology validation studies are also presented. These studies included recovery studies of model VOC spiked on three types of Tenax sampling devices including authenic actively pumped (VOST) and passive (EPA) devices. Replicate devices spiked in an exposure chamber were also subjected to parallel analyses using the new methodology and traditional thermal desorption gas chromatography.
Caption title. "Nov. 1987." "EPA/600/4-87/033." Microfiche.