| 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 |
