Abstract
Several mining areas are abandoned in the Iberian Pyrite Belt (IPB) leading to important points of environmental contamination. The potential and immediate environmental risk and impact on public health of hazardous elements from soil can be estimated from availability analysis. The aim of this study was to evaluate the availability of Cu, Pb and Zn in Sao Domingos and Canal Caveira mining areas located in the IPB. Both mining areas had high soil elemental total concentrations. Metals availability changed with plots and, is related with soils characteristics. In Canal Caveira mine area, the Pb available fraction in soils was higher than in Sao Domingos soils however, the opposite was observed for Zn. The fractions of available Cu, in both mine soils, are <0.6 % of the total concentration. In both mining areas, Cu and Zn are mainly associated with the residual fraction, while Pb is associated with residual fraction in Sao Domingos and with organic matter in Canal Caveira soils.
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