| Main Title |
NAREL standard operating procedures for Radon-222 measurement using diffusion barrier charcoal canisters / |
| Author |
Gray, David J. ;
Windham, S. T.
|
| Other Authors |
|
| CORP Author |
National Air and Radiation Environmental Lab., Montgomery, AL. |
| Publisher |
U.S. Environmental Protection Agency, Office of Radiation Programs, National Air and Radiation Environmental Laboratory, |
| Year Published |
1990 |
| Report Number |
EPA 520/5-90/032 |
| Stock Number |
PB91-179002 |
| OCLC Number |
39857872 |
| Subjects |
Radon--Measurement
|
| Additional Subjects |
Radon ;
Charcoal ;
Adsorption ;
Activated carbon ;
Measurement ;
Standards ;
Radioactive isotopes ;
Equipment ;
Exposure ;
Polyethylene ;
Membranes ;
Water vapor ;
Desorption ;
Laboratories ;
Indoor air pollution ;
Canisters ;
Radon 222
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 520-5-90-032 |
|
Headquarters Library/Washington,DC |
08/19/2014 |
| ELBD ARCHIVE |
EPA 520-5-90-032 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 520-5-90-032 |
repository copy |
AWBERC Library/Cincinnati,OH |
08/03/2015 |
| ELBD |
EPA 520-5-90-032 |
|
AWBERC Library/Cincinnati,OH |
08/19/2015 |
| ERAD |
EPA 520/5-90-032 |
|
Region 9 Library/San Francisco,CA |
07/16/2012 |
| NTIS |
PB91-179002 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ii, 31 pages : illustrations ; 28 cm. |
| Abstract |
The passive nature of activated charcoal allows both adsorption and desorption of radon, and since the adsorbed radon under goes radioactive decay during the exposure period, the ability of the non-diffusion barrier (open-faced) canister to uniformly integrate over the entire exposure period can be impaired. To help alleviate the problem, the EPA open-face canister was modified by inserting a polyethylene membrane between the retaining screen and the carbon bed. This decreased the water vapor and radon adsorbed by the carbon, reduced the rate of adsorption/desorption between the carbon and the environmental, and improved integration capability. |
| Notes |
"EPA 520/5-90-032." "November 1990"--Cover. Includes bibliographical references (page 31). |
