کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4458567 | 1620962 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid speciation and availability of chromium in ultramafic soils from Niquelândia, Brazil
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solid speciation and availability of chromium in ultramafic soils from Niquelândia, Brazil Solid speciation and availability of chromium in ultramafic soils from Niquelândia, Brazil](/preview/png/4458567.png)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geochemical Exploration - Volume 88, Issues 1–3, January–March 2006, Pages 206–209
Journal: Journal of Geochemical Exploration - Volume 88, Issues 1–3, January–March 2006, Pages 206–209
نویسندگان
J. Garnier, C. Quantin, E.S. Martins, T. Becquer,