Record Display for the EPA National Library Catalog

RECORD NUMBER: 9 OF 15

OLS Field Name OLS Field Data
Main Title NAREL standard operating procedures for Radon-222 measurement using diffusion barrier charcoal canisters /
Author Gray, David J. ; Windham, S. T.
Other Authors
Author Title of a Work
Windham, Sam T.
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
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101MDTM.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 520-5-90-032 Headquarters Library/Washington,DC 02/11/2014
EJBD  EPA 520-5-90-032 Headquarters Library/Washington,DC 08/19/2014
EKAM  EPA 520/5-90/032 Region 4 Library/Atlanta,GA 09/12/1998
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 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
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).