Record Display for the EPA National Library Catalog


Main Title EPA air monitoring bank. {microfiche} /by Robert E. Lee, Jr.
Author Lee., R. E.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher U.S. Environmental Protection Agency, Atmospheric Research and Exposure Assessment Laboratory,
Year Published 1990
Report Number EPA/600/D-90/070
Stock Number PB90-246216
Subjects Air--Pollution--United States ; Air quality--United States ; Air quality--Standards--United States
Additional Subjects Sample preparation ; Forecasting ; Solvent extraction ; Sorbents ; Cryogenics ; Air filters ; Particles ; Gases ; Air pollution sampling ; Air specimen banks ; Air samplers ; US EPA
Library Call Number Additional Info Location Last
NTIS  PB90-246216 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13 p. : b ill., maps ; 28 cm.
Specimen banking of air pollution samples has not been attempted because of the complexity of this type of environmental medium. Pollutants may exist in air as gases or particles or distributed in between these two states. Empirically, air pollutants may be categorized as volatiles, semivolatiles, or nonvolatiles based on vapor pressure. Since no single collection device exists for all three categories, very different monitoring technologies are required for each. The most promising approach for air specimen banking is to focus on the semivolatile fraction using a sampler that consists of a filter followed by a downstream sorbent material to collect gases. The combined solvent extract of both the filter and the sorbent can thereby be cryogenically preserved for retrospective analysis.
Cover title. "September 1989." "EPA-600/D-90/070."