Model for the sorption of organic compounds by soil from water

Abstract

The solvation parameter model successfully accounts for the factors that determine the uptake of organic compounds by soil from water. Wet soil is significantly less cohesive than water, is less dipolar, has roughly similar hydrogen-bond basicity, and substantially weaker hydrogen-bond acidity. By analogy to other distribution systems it has similar extraction power to isobutanol and retention properties that resemble those of sodium taurodeoxycholate micelles in micellar electrokinetic chromatography. The possible use of chromatographic systems for the surrogate estimation of the soil–water sorption coefficient (K_OC) is discussed.