||Compensating for Sink Effects in Emissions Test Chambers by Mathematical Modeling.
Dunn, J. E. ;
Tichenor, B. A. ;
||Arkansas Univ., Fayetteville. Dept. of Mathematical Sciences.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Air pollution ;
Mathematical models ;
Test chambers ;
Volatile organic compounds ;
Emission factors ;
Indoor air pollution ;
||Some EPA libraries have a fiche copy filed under the call number shown.
The paper presents mechanistic mathematical models that account for two phenomena: (1) interior surfaces of a state-of-the-art emissions test chamber acting as a transient sink for organic emissions; and (2) the effect of increasing chamber concentration on the emission rate of the source. A key point is that the effect of the chamber sink can be adjusted out simply by first fitting the appropriate model, then setting to zero the rate constant which governs sink adsorption/absorption. As a consequence of the mathematical development, a source emission rate as a function of time and a steady state emission rate factor are given precise definitions. (Copyright (c) Pergamon Press, 1988.)