Main Title |
Critical Evaluation of the Diffusion Hypothesis in the Theory of Porous Media Volatile Organic Compound (VOC) Sources and Sinks. |
Author |
Dunn, J. E. ;
Chen., T. ;
|
CORP Author |
Arkansas Univ., Fayetteville. Dept. of Mathematical Sciences.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
Publisher |
c1993 |
Year Published |
1993 |
Report Number |
EPA/600/J-94/118; |
Stock Number |
PB94-159019 |
Additional Subjects |
Indoor air pollution ;
Diffusion ;
Porous materials ;
Reprint ;
Mathematical models ;
Isotherms ;
Stationary sources ;
Organic compounds ;
Least squares method ;
Carpets ;
Ethyl benzene ;
Emission ;
Statistical analysis ;
Environmental exposure ;
VOCs(Volatile organic compounds) ;
Perchloroethylene
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB94-159019 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
18p |
Abstract |
The paper proposes three alternative, diffusion-limited mathematical models to account for this interaction, using the linear isotherm model as a reference point. Their taxonomy is keyed to the nature of the vapor-sink interface. While the linear isotherm model gave an adequate description of data when a pillow-sink was challenged with ethylbenzene, a new single-parameter diffusion model gave a much improved description of data when the same pillow-sink was challenged with perchloroethylene. A hybrid, sorption/desorption, diffusion-limited model was the only plausible model when a carpet-sink was challenged with ethylbenzene. Some new computational aids, particularly interval-weighted least squares, are introduced in the context of model validation. (Copyright (c) American Society for Testing and Materials 1993.) |
Supplementary Notes |
Pub. in Modeling of Indoor Air Quality and Exposure, ASTM STP 1205, p64-80 Sep 93. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Critical Evaluation of the Diffusion Hypothesis in the Theory of Porous Media Volatile Organic Compound (VOC) Sources and Sinks. |
Category Codes |
68A; 89B; 57U |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/13 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
413329991 |
Origin |
NTIS |
Type |
CAT |