1997 Volume 41 Pages 563-568
The retardation coefficient due to the sorption from gaseous volatile organic compounds (VOCs) to soil is important to predict the VOCs gas behavior in the unsaturated zone. The formulation and two types of experiments were done to evaluate the effect of sorption from gas to soil. The values of sorption coefficient and the retardation coefficient on the model soils are 0.03-203.78 and 1.13-114.62, respectively. Considering by the retardation coefficient, model simulation could result in good agreement with the experiment results.
