Record Display for the EPA National Library Catalog

RECORD NUMBER: 47 OF 48

OLS Field Name OLS Field Data
Main Title Rapid Method for Determining 85Kr in Environmental Air Samples.
Author Cumming, S. L. ; Sheari, R. L. ; Porte, C. R. ;
CORP Author Eastern Environmental Radiation Lab., Montgomery, Ala.
Year Published 1971
Report Number SM-148/11;
Stock Number PB-213 907
Additional Subjects ( Air pollution ; Krypton 85) ; ( Gas analysis ; Krypton 85) ; ( Radioactive contaminants ; Air pollution) ; Gas sampling ; Scintillation counters ; Concentration composition ; Laboratory equipment ; Air pollution detection
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-213 907 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 8p
Abstract
The report describes a rapid method for determining 85Kr in environmental air samples. Equipment and procedure used to separate 85Kr from environmental air samples for liquid scintillation counting are described in detail. The procedure employs charcoal and molecular sieve cold traps, calcium sulphate, ascarite (NaOH preparation) and a titanium furnace (900C) for the removal and separation of other air constituents from krypton. Air samples are spiked with 83Kr(m) to provide a direct determination of the krypton separation yield. One cubic metre of air can be processed in about 4 h with 80 to 90% krypton recovery resulting in a 2-sigma error of the 85Kr concentration of less than 10%. The procedure is well suited to monitoring environmental air samples with respect to nuclear facilities, such as nuclear reactors and fuel reprocessing plants.