New approaches to studying heavy metals in soils by X-ray absorption spectroscopy (XANES)) and extractive fractionation

作者: T. M. Minkina , A. V. Soldatov , D. G. Nevidomskaya , G. V. Motuzova , Yu. S. Podkovyrina

DOI: 10.1134/S001670291512006X

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摘要: A comprehensive approach to studying the nature of interaction between heavy-metal ions and organic–mineral matrix soils involves application modern physical analytical techniques chemical methods extractive fractionation. XANES was used obtain first data on near-edge fine structure X-ray spectra for a number species in ordinary chernozem. Data soil samples saturated with Zn2+ Cu2+ obtained by (X-ray absorption structure) make it possible elucidate mechanisms metals types bonds formed thereby. As contamination doze Cu Zn is increased (from 2000 10 000 mg/kg soil), particularly if are introduced form readily solubility salts, bonding components weakens. fractionation metal compounds from testify that ion preferably retained organic matter soil, whereas bound mostly silicates, carbonates, Fe Mn (hydro)oxides.

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