Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4458567 | Journal of Geochemical Exploration | 2006 | 4 Pages |
Abstract
The sources and the potential availability of chromium were investigated in ultramafic soils from Niquelândia (Goïas State, Brazil), with chemical extractions associated to mineralogical studies, in order to evaluate its bioavailability and its potential impact on the soil biodiversity. Cr contents are particularly high in the studied soils and its partitioning among the solid phase varies with the position in the landscape and depth. Most of the Cr is associated to Fe-oxides but the amount of exchangeable Cr(VI) is high, particularly in one soil profile. Cr availability is higher than expected, and Cr-tolerant vegetation is probably growing on these soils.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Economic Geology
Authors
J. Garnier, C. Quantin, E.S. Martins, T. Becquer,