disponibilidade de cu, pb e zn nas áreas mineiras de canal caveira e são domingos - faixa piritosa ibérica availability of cu, pb and zn in canal caveira and são domingos mine areas from iberian pyrite belt
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2010
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Abstract
Avaliou-se a disponibilidade do Cu, Pb e Zn nos solos das áreas mineiras de São Domingos e Canal Caveira (Faixa Piritosa Ibérica) com o objectivo de determinar a potencialidade de dispersão daqueles elementos no meio. Em ambas as áreas as concentrações totais dos elementos foram elevadas e a disponibilidade variou consoante as parcelas e, consequentemente, com as características dos solos. A fracção disponível de Pb é superior nos solos de Canal Caveira, contudo para o Zn observou-se o contrário. Em ambos os solos, a fracção de Cu disponível é <0,6 % da concentração total. Nos solos das duas minas, o Zn e Cu estão maioritariamente associados à fracção residual enquanto que o Pb está associado à fracção residual em São Domingos e à matéria orgânica em Canal Caveira. Estas áreas mineiras apresentam baixo risco ambiental relativamente ao Cu porém, o Pb e o Zn, em função da sua disponibilidade, podem afectar a biodiversidade.
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.
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.
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santos2010revistadisponibilidade
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| Authors | ;E.S. Santos;M.M. Abreu;M. B. Ferreira;M.C.F. Magalhães |
| Journal | ciência da informação |
| Year | 2010 |
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| Keywords | Keywords not found |
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