Relationship between the soil sorption constants for pesticides and their physicochemical properties

Abstract

Abstract Soil sorption constants based on the organic carbon content (Koc) of 15 pesticides were measured using two soils at three concentrations. Significant correlations were found between the Koc value and water solubility (WS), octanol/water partition coefficient (Kow), retention time in reversed-phase HPLC (Rt) and molecular weight (mol. wt.). Thus the soil sorption constants of nonionic pesticides can be predicted by these four parameters.