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RECORD NUMBER: 591 OF 1607

OLS Field Name OLS Field Data
Main Title Experience from the Use of Tenax in Distributed Ambient Air Volume Sets.
Author Walling, J. F. ;
CORP Author Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-600/D-84-156;
Stock Number PB84-201672
Additional Subjects Adsorbents ; Gas sampling ; Gas analysis ; Air pollution ; Sampling ; Sites ; Quality assurance ; Concentration(Composition) ; Chromatographic analysis ; Assessments ; Tenax GC resins ; Air pollution detection ; Air pollution sampling
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-201672 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 13p
Abstract Solid adsorbent beds are a practical, commonly used way to concentrate organic molecules from large volumes of air to make analysis possible. A small set of such beds exposed simultaneously, but each at a quite different flow rate, has been suggested as a way to assess the presence of complications. This sampling approach represents a strong quality assurance activity because it provides a summary index of the effects of a sizable number of variables to aid in quality assessment. Implementation is quite practical. Costs are not trivial since sets of four samples are preferred. However, some complications easily discovered but not specifically identifiable by this approach might elude more conventional quality control checking. Examples would be selective contamination, inadequate retention and artifact reactions. Results from tandem tube and non-tandem tube sets are presented to illustrate these suggestions.
Supplementary Notes See also PB84-196989.
PUB Date Free Form Jun 84
Category Codes 7D; 68A; 99A
NTIS Prices PC A02/MF A01
Primary Description 600/08
Document Type NT
Cataloging Source NTIS/MT
Control Number 424416732
Origin NTIS
Type CAT