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 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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 |