| Main Title |
The use of Tedlar bags to contain gaseous benzene samples at source-level concentrations / |
| Author |
Knoll, Joseph E.
|
| Other Authors |
|
| CORP Author |
Environmental Monitoring and Support Lab., Research Triangle Park, NC. Quality Assurance Branch. |
| Publisher |
Environmental Monitoring and Support Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1978 |
| Report Number |
EPA-600/4-78-057 |
| Stock Number |
PB-291 569 |
| OCLC Number |
45666118 |
| Subjects |
Benzene--Sampling ;
Benzene--Testing ;
Gases--Analysis ;
Air--Pollution--Measurement ;
Gas--Analysis
|
| Additional Subjects |
Gas analysis ;
Benzene ;
Containers ;
Sampling ;
Calibrating ;
Chemical analysis ;
Air pollution ;
Gas chromatography ;
Laboratory equipment ;
Concentration(Composition) ;
Air pollution detection ;
Tedlar bags ;
EPA method 111
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-4-78-057 |
|
Headquarters Library/Washington,DC |
05/23/2013 |
| ELBD ARCHIVE |
EPA 600-4-78-057 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 600-4-78-057 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/17/2014 |
| ESAD |
EPA 600-4-78-057 |
|
Region 10 Library/Seattle,WA |
07/29/2005 |
| NTIS |
PB-291 569 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vi, 38 p. : ill. ; 28 cm. |
| Abstract |
Tedlar bags have been evaluated as containers for gaseous benzene samples for use in EPA Method 111 - Determination of Benzene from Stationary Sources. When such bags were used for storage, benzene samples remained essentially unchanged when held at ambient temperatures for up to 17 days, when cooled to -40C for one hour or when heated to 70C for one hour. At higher temperatures, some concentration changes were observed and above 105C decomposition of the bag seals resulted. At room temperature, there was no evidence of permeation loss and absorptive loss could only be observed upon prolonged contact. Flushing bags three times with nitrogen was sufficient to remove all traces of previous samples. Tedlar bags were also used to prepare gaseous mixtures for calibration purposes in gas chromatography. Such samples were prepared by injecting measured quantities of liquid benzene into a bag while metering-in nitrogen gas. |
| Notes |
Includes bibliographical references. "September 1978"--Cover. "EPA-600/4-78-057." |
