Studying the Transformation of Cu 2+ Ions in Soils and Mineral Phases by the XRD, XANES, and Sequential Fractionation Methods Full article
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Journal of Geochemical Exploration
ISSN: 0375-6742 |
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| Output data | Year: 2016, Volume: 184, Number: Part B, Pages: 365-371 Pages count : 7 DOI: 10.1016/j.gexplo.2016.10.007 | ||||||||
| Tags | Cu2 + ions, Calcic Chernozem, Mineral phases of layered silicates, Sequential fractionation, X-ray powder diffraction, XANES spectroscopy | ||||||||
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 16-14-10217 (АААА-А16-116060950058-1) |
Abstract:
Interaction of Cu2 + ions with the matrix of Calcic Chernozem and mineral phases of layered silicates was assessed by the Miller method of sequential fractionation and a set of synchrotron X-ray methods, including X-ray powder diffraction (XRD) and X-ray absorption spectroscopy (XANES). A model laboratory experiment was carried out to study the effect of organomineral matrix on the sorption of Cu2 + ions. The time of soil incubation with Cu compounds was 3 years. It was shown that the input of Cu into Calcic Chernozem in the form of monoxide (CuO) and salt (Cu(NO3)2) affected the transformation of Cu compounds and their affinity for metal-bearing phases. It was found that the contamination of soil with a soluble Cu2 + salt increased the bioavailability of the metal and the role of organic matter and Fe oxides in the fixation and retention of Cu. During the incubation of soil with Cu monoxide, the content of the metal in the residual fractions increased, which was related to the possible entry of Cu in the form of isomorphic impurities into silicates, as well as to the incomplete dissolution of exogenic compounds at the high level of their input into the soil. A mechanism for the structural transformation of minerals was revealed, which showed that ion exchange process result in the sorption of Cu2 + ions from the saturated solution by active sites on the internal surface of the lattice of dioctahedral aluminosilicates. Surface hydroxyls at the octahedral aluminum atom play the main role. X-ray diagnostics revealed that excess Cu2 + ions are removed from the system due to the formation and precipitation of coarsely crystalline Cu(NO3)(OH)3.
Cite:
Minkina T.M.
, Nevidomskaya D.G.
, Shuvaeva V.A.
, Soldatov A.V.
, Tsitsuashvili V.S.
, Zubavichus Y.V.
, Rajput V.D.
, Burachevskaya M.V.
Studying the Transformation of Cu 2+ Ions in Soils and Mineral Phases by the XRD, XANES, and Sequential Fractionation Methods
Journal of Geochemical Exploration. 2016. V.184. NPart B. P.365-371. DOI: 10.1016/j.gexplo.2016.10.007 WOS Scopus РИНЦ ANCAN OpenAlex
Studying the Transformation of Cu 2+ Ions in Soils and Mineral Phases by the XRD, XANES, and Sequential Fractionation Methods
Journal of Geochemical Exploration. 2016. V.184. NPart B. P.365-371. DOI: 10.1016/j.gexplo.2016.10.007 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Aug 8, 2016 |
| Accepted: | Oct 16, 2016 |
| Published online: | Oct 17, 2016 |
| Published print: | Jan 1, 2018 |
Identifiers:
| Web of science: | WOS:000417633800016 |
| Scopus: | 2-s2.0-85008939257 |
| Elibrary: | 35699542 |
| Chemical Abstracts: | 2016:1723987 |
| Chemical Abstracts (print): | 169:454341 |
| OpenAlex: | W2532727988 |