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Distribution of Heavy Metals in Calcareous and Non-Calcareous Soils in Spain |
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| Authors: | R. Moral R. J. Gilkes M. M. JordÁn |
| Affiliation: | 1. Department of Agrochemistry and Environment, Miguel Hernandez University, E-03312, Orihuela (Alicante), Spain 2. Department of Soil Science and Plant Nutrition, University of Western Australia, Crawley, WA, 6009, Australia 3. Department of Agrochemistry and Environment, Miguel Hernandez University, Avda. El Ferrocarril s/n. E-03202 Elche (Alicante), Spain |
| Abstract: | The distribution of chemical forms of Cd, Ni, Cr, Co, Ag, Pb, Cu, Mn and Zn in eight contaminated soils from Spain was studied using a sequential extraction procedure that fractionates the metal into soluble-exchangeable, specifically sorbed-carbonate bound, oxidizable, reducible and residual forms. SEM and EDXA analysis was used to analyse the soil matrix to determine the distribution of heavy metals. The residual, reducible and carbonate-sorbed forms were dominant. Metals were generally dispersed throughout the soil matrix and could not be located by SEM-EDXA. |
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