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This study was designed to inventory heavy metal concentrations (Cd, Cr, Cu, Hg, Ni, Pb and Zn) in the soils of Réunion (volcanic island in the Indian Ocean). Thirty-nine sampling sites were selected to account for the entire range of soils present on the island. From one to three layers of cultivated and uncultivated soils were sampled, with 84 soil samples analyzed overall. Réunion soils were found...
We compared Cr, Cu, Ni and Zn fractionation patterns in four typical soils naturally containing high levels of these elements on the tropical volcanic island of Réunion. Two sequential chemical extraction procedures were used: the modified four-stage BCR procedure (subsequently called mBCR) and the modified six-stage Geological Survey of Canada procedure (subsequently called mGSC). The results obtained...
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