AN EMPIRICAL RELATIONSHIP BETWEEN CHEMICAL STRUCTURE AND SORPTION OF SOME HERBICIDES BY SOILS

A factor given by (parachor-45N), where N is the number of sites in a molecule which can participate in the formation of a hydrogen bond, is shown to be correlated with log Freundlich k value for the adsorption of 29 aromatic herbicides by two soils. This empirical relationship may be useful for prediction of the approximate extent of adsorption of such herbicides by soils in which the organic matter is the dominant adsorbing constituent. © 1969, American Chemical Society. All rights reserved.