A baseline study on trace metal elution from diverse soil types |
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| Authors: | N E Korte J Skopp E E Niebla W H Fuller |
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| Institution: | 1. Dept. of Soils, Water and Engineering, Agricultural Experiment Station, The University of Arizona, Tucson, Ariz., U.S.A.
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| Abstract: | Ten soils were leached with a dilute solution of AICI3, and FeCl2 adjusted with HCl to pH 3.0. The effluents were analyzed for eight trace metals as well as pH, to determine the maximum contribution of the soils to the trace metal burden of the soil solution. This contribution was correlated with various soil properties to evaluate the controlling factors on the elution of certain metals. Measurable quantities of Mn, Co, Zn, Ni, Cu, and Cr were found in the soil leachates; Cd and Pb were infrequently detected. The important soil properties describing the amounts of the elements leached were the total metal originally present, the total amount of Mn, and the percentage of free iron oxides. |
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