Journal ArticleDOI
Migration of silver, indium, tin, antimony, and bismuth and variations in their chemical fractions on addition to uncontaminated soils
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In this article, metal migration in soils was mainly associated with the exchangeable, carbonate-bound, and metal-organic complex-bound (Me-Org) fractions, and the capacity of soils to retain the metals was in the order Andosol > Fluvisol > Regosol ≅ Cambisol.Abstract:
Metals (Ag, In, Sn, Sb, and Bi) were added to the surfaces of four soil types in columns and exposed to precipitation in a grass-covered field for 18 months. The distributions of the total concentrations and the chemical fractions of the metals were then analyzed to study the metal migration in the soils. The chemical fractionation was performed by using an eight-step sequential extraction technique. Most of the added metals were retained in the uppermost (0 to 2 cm with filter) soil layers, but small portions were moved to the sublayers. Major chemical fractions (>10% in proportion) of the added metals were residual, H 2 O 2 extractable organic-bound (H 2 O 2 -Org), and metal-organic complex-bound (Me-Org) fractions for Ag, Me-Org, residual, carbonate-bound, and H 2 O 2 -Org fractions for In, residual, Me-Org, amorphous metal oxides-bound (am-MeOx), and crystalline Fe oxides-bound fractions for Sn, Me-Org, residual, am-MeOx, and H 2 O 2 -Org fractions for Sb, and H 2 O 2 -Org, am-MeOx, and Me-Org fractions for Bi. Metal migration in soils was mainly associated with the exchangeable, carbonate-bound, and Me-Org fractions. The capacity of soils to retain the metals was in the order Andosol > Fluvisol > Regosol ≅ Cambisol. The mobility of metals was in the order In ≅ Bi > Sb > Ag Sn.read more
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References
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Book
HUmus Chemistry Genesis, Composition, Reactions
TL;DR: In this paper, the authors present an analysis of organic matter in soil using NMR Spectroscopy and analytical pyrolysis, showing that organic matter is composed of nitrogen and ammonium.
Journal ArticleDOI
Quantitative assessment of worldwide contamination of air, water and soils by trace metals
Jerome O. Nriagu,Jozef M. Pacyna +1 more
TL;DR: Calculated loading rates of trace metals into the three environmental compartments demonstrate that human activities now have major impacts on the global and regional cycles of most of the trace elements.
Journal ArticleDOI
Bioaccumulation and toxicity of silver compounds: A review
TL;DR: In this paper, a view of the literature revealed that bioaccumulation of silver in soil is rather low, even if the soil is amended with silver-containing sewage sludge.
Journal ArticleDOI
Antimony in the environment: a review focused on natural waters: II. Relevant solution chemistry
TL;DR: In this article, the main characteristics of the solution chemistry of antimony in relation to its behaviour and fate in natural waters are discussed based on a careful and systematic examination of a comprehensive collection of solution equilibrium and environmentally oriented studies, some published more than 100 years ago.
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