ABSTRACT
This chapter deals with the spontaneous transport of organic chemicals from soil to air. It describes methods of estimating emission rates, residence times, and residual concentrations of a chemical from the time it is applied to soil until such time as equilibrium concentration levels are reached in soil and in air. In the following, we will assume that we are dealing with inert chemicals, but keep in mind that residence times in soil are long enough that chemical conversion processes such as biodegradation probably compete with volatilization.
