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Revista de Ciências Agrárias
versão impressa ISSN 0871-018X
Resumo
SANTOS, E.S.; ABREU, M.M.; FERREIRA, M. B. e MAGALHAES, M.C.F.. Availability of Cu, Pb and Zn in Canal Caveira and São Domingos mine areas from Iberian Pyrite Belt. Rev. de Ciências Agrárias [online]. 2010, vol.33, n.1, pp.358-366. ISSN 0871-018X.
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 São 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 São 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 São Domingos and with organic matter in Canal Caveira soils.
Palavras-chave : abandoned mines; availability; elements leaching; elements partitioning.