TRACE ELEMENT MOVEMENT IN SOILS

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Abstract
A natural leachate individually spiked with 11 trace elements (As, Be, Cd, Cr, Cu, Hg, Ni, Pb, Se, V, Zn) was used to leach 11 soils from the seven most prominent orders. Soil column effluents were continuously analyzed for the various elements and these data were correlated with soil physical and chemical properties. Although the relative mobilities of these trace elements are quite variable, data are presented showing that it should be possible to qualitatively predict the migration of an element on the basis of soil properties. Soil texture, surface area, percentage of free iron oxides, and pH provide the most useful information for estimating an element's migration. Knowledge of cation exchange capacity does not improve the ability to predict the movement of ions through these natural soils. A natural leachate individually spiked with 11 trace elements (As, Be, Cd, Cr, Cu, Hg, Ni, Pb, Se, V, Zn) was used to leach 11 soils from the seven most prominent orders. Soil column effluents were continuously analyzed for the various elements and these data were correlated with soil physical and chemical properties. Although the relative mobilities of these trace elements are quite variable, data are presented showing that it should be possible to qualitatively predict the migration of an element on the basis of soil properties. Soil texture, surface area, percentage of free iron oxides, and pH provide the most useful information for estimating an element's migration. Knowledge of cation exchange capacity does not improve the ability to predict the movement of ions through these natural soils. © Williams & Wilkins 1976. All Rights Reserved.

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