Main Title |
Evaluation of cryogenic trapping as a means for collecting organic compounds in ambient air / |
Author |
Holdren, M. ;
Rust, S. ;
Smith, R. ;
Koetz, J.
|
Other Authors |
|
CORP Author |
Battelle Columbus Labs., OH.;Environmental Monitoring Systems Lab., Research Triangle Park, NC. |
Publisher |
U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, |
Year Published |
1985 |
Report Number |
EPA/600/4-85/002; EPA-68-02-3487 |
Stock Number |
PB85-144046 |
Subjects |
Low temperature engineering--Environmental aspects ;
Air--Pollution--United States--Measurement ;
Gas chromatography
|
Additional Subjects |
Gas analysis ;
Gas chromatography ;
Traps ;
Organic compounds ;
Sampling ;
Cryogenics ;
Performance evaluation ;
Laboratory equipment ;
Chemical analysis ;
Air pollution ;
Volatile organic compounds ;
Air pollution detection
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB85-144046 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
57 pages ; 28 cm |
Abstract |
The methodology used in reduced temperature preconcentration of volatile organic compounds has been tested using a prototype automated gas chromatographic system. Mixtures of sixteen volatile organic compounds in humidified zero air were passed through a Nafion tube dryer and the organic compounds were collected on a reduced-temperature trap. The dryer reduced the water concentration without significantly affecting the integrity of the trace organic species. The selective reduction of water vapor improves the chromatography of the trace organics and likewise permits processing larger sample volumes. Statistical analysis of the data indicated that the canisters would serve as acceptable storage vessels for most of the volatile organic compounds tested. |
Notes |
Caption title. "Jan. 1985." "EPA/600/4-85-002." Microfiche. |