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RECORD NUMBER: 409 OF 668

OLS Field Name OLS Field Data
Main Title Method for testing the diffusion coefficient of polymer films /
Author Perry, R. B. ; Snoddy, R.
Other Authors
Author Title of a Work
Snoddy, R.
CORP Author Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. National Risk Management Research Lab.
Publisher [U.S. Environmental Protection Agency, National Risk Management Research Laboratory],
Year Published 1996
Report Number EPA/600/A-96/110; EPA-68-D4-0005
Stock Number PB97-122667
Additional Subjects Radon ; Radionuclide migration ; Polymers ; Thin films ; Radiation monitoring ; Barriers ; Permeability ; Porosity ; Diffusion modeling ; Diffusion coefficient ; Test methods ; Indoor air pollution ; Reprints ; Reprints ; Barriers ; Permeability ; Porosity ; Diffusion modeling ; Diffusion coefficient ; Test methods ; Indoor air pollution
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P100UYX3.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB97-122667 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 12 pages : illustrations
Abstract
The paper gives results of the development and evaluation of a method to measure the diffusion of radon through thin polymer films. The system was designed so that a simple, one-dimensional transport model could be used. The activity-versus-time data are collected and fitted using a non-linear least squares method. The system measurements and the three fit coefficients are used to calculate the system efficiency and diffusion coefficient. Three polymer films with published values of the radon diffusion coefficient (polyethylene, polyester, and latex) were tested in duplicate to evaluate the method and determine its comparability to values in published literature.
Notes
"Presented at the ARRST Radon Symposium, Haines City, Fl., September 29-October 2, 1996. Sponsored by Environmental Protection Agency, Research Triangle Park, NC." Includes bibliographical references. Microfiche.