Abstract
The mobility of a chemical in the environment is—among other things—determined by adsorption on natural surfaces. This physicochemical property of the chemical yields information about its tendency to accumulate on the earth's surface. The adsorption coefficients of anphthalene, 2,4-dichlorophenoxyacetic acid, p-chloroaniline, hexachlorobenzene, and γ-hexachlorocyclohexane for several organic and inorganic materials and natural soils were determined. With few exceptions, the organic constituents of the soils are mainly responsible for their adsorption properties. Cellulose appeared to be a well-suited model adsorbent for simulating the relative adsorption behavior of the chemicals. It is proposed to use such model adsorbents for screening tests for the purpose of hazard ranking instead of natural soils, which require complicated analytical procedures.
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