||Interaction of Vapour Phase Organic Compounds with Indoor Sinks.
Tichenor, B. A.;
Dunn, J. E.;
Sparks, L. E.;
Mason, M. A.;
||Acurex Corp., Research Triangle Park, NC. ;Arkansas Univ., Fayetteville. Dept. of Mathematical Sciences.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Indoor air pollution;
Volatile organic compounds;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The interaction of indoor air pollutants with interior surfaces (i.e., sinks) is a well known, but poorly understood, phenomenon. Studies have shown that re-emissions of adsorbed organic vapors can contribute to elevated concentrations of organics in indoor environments. Research is being conducted in small environmental test chambers to develop data for predicting sink behavior. The paper reports on the development of sink models based on fundamental mass transfer theory. The results of experiments conducted to determine the magnitude and rate of adsorption and desorption of vapor phase organic compounds for several materials are presented. Five materials were evaluated: carpet, painted wallboard, ceiling tile, window glass, and upholstery. Two organic compounds were tested with each material: tetrachloroethylene (a common cleaning solvent) and ethylbenzene (a common constituent of petroleum-based solvents widely used in consumer products). The results of the experimental work are presented showing the relevant sink effect parameters for each material tested and comparing the sorptive behavior of the two organic compounds evaluated. An indoor air quality (IAQ) model was modified to incorporate adsorption and desorption sink rates. The model was used to predict the temporal history of the concentration of total vapor phase organics in a test house after application of a wood finishing product. The predicted results are presented and compared to measured values. Suggestions for further research on indoor sinks are presented. (Copyright (c) 1991 Danish Technical Press.)
||Pub. in Indoor Air, v1 p23-35 1991. Prepared in cooperation with Arkansas Univ., Fayetteville. Dept. of Mathematical Sciences. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
|NTIS Title Notes
||Journal article Jun 89-Feb 90.
||Reprint: Interaction of Vapour Phase Organic Compounds with Indoor Sinks.
||PC A03/MF A01