Speciation of Zn and Cu in Technosol and Evaluation of a Sequential Extraction Procedure Using XAS, XRD and SEM–EDX analyses Full article
| Journal |
Environmental Geochemistry and Health
ISSN: 0269-4042 , E-ISSN: 1573-2983 |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Output data | Year: 2021, Volume: 43, Number: 6, Pages: 2301-2315 Pages count : 15 DOI: 10.1007/s10653-020-00693-1 | ||||||||
| Tags | Soil Zink Copper Sequential extraction Contamination XRD XANES EXAFS SEM–EDX | ||||||||
| Authors |
|
||||||||
| Affiliations |
|
Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0852-2020-0029 |
| 2 | Russian Foundation for Basic Research | 19-34-60041 (АААА-А19-119082390069-0) |
Abstract:
Metal speciation, linked directly to bioaccessibility and lability, is a key to be considered when assessing associated human and environmental health risks originated from anthropogenic activities. To identify the Zn and Cu speciation in the highly contaminated, technogenically transformed soils (Technosol) from the impact zone near the industrial sludge reservoirs of chemical plant (Siverskyi Donets River floodplain, southern Russia), the validity of the BCR sequential extraction procedure using the X-ray absorption fine-structure and X-ray powder diffraction (XRD) analyses was examined after each of the three stages. After the removal of exchange and carbonate-bonded Zn and Cu compounds from Technosol (first stage of extraction), the resulting residual soil showed enrichment in a great diversity of metal compounds, primarily with Me–S and Me–O bonds. The number of compounds with a higher solubility decreased at the subsequent stages of extraction. In the residual soil left over after extracting the first and second fractions, the dominant Zn–S bond appeared as wu¨rtzite (hexagonal ZnS) that made up more than 50%, while the Cu–S bond was almost completely represented only by chalcocite (Cu2S). The XRD analysis revealed the authigenic minerals of metals with S: sphalerite (cubic ZnS), wurtzite (hexagonal ZnS), covellite (CuS) and bornite (Cu5FeS4). The scanning electron microscopy data confirmed that wu¨rtzite was the dominant form of Me with sulfur-containing and carbonate-containing minerals. The Zn–S bond was the main component (57%), whereas the Cu–O bond was dominant in the residual fraction (the fraction after the third-stage extraction). The results revealed that the composition of the residual fractions might include some of the most stable and hard-to-recover metal compounds of technogenic origin. Thus, the application of the novel instrumental methods, coupled with the chemical fractionation, revealed the incomplete selectivity of the extractants in the extraction of Zn and Cu in longterm highly contaminated soils.
Cite:
Nevidomskaya D.G.
, Minkina T.M.
, Soldatov A.V.
, Bauer T.V.
, Shuvaeva V.A.
, Zubavichus Y.V.
, Trigub A.L.
, Mandzhieva S.S.
, Dorovatovskii P.V.
, Popov Y.V.
Speciation of Zn and Cu in Technosol and Evaluation of a Sequential Extraction Procedure Using XAS, XRD and SEM–EDX analyses
Environmental Geochemistry and Health. 2021. V.43. N6. P.2301-2315. DOI: 10.1007/s10653-020-00693-1 WOS Scopus РИНЦ AN PMID OpenAlex
Speciation of Zn and Cu in Technosol and Evaluation of a Sequential Extraction Procedure Using XAS, XRD and SEM–EDX analyses
Environmental Geochemistry and Health. 2021. V.43. N6. P.2301-2315. DOI: 10.1007/s10653-020-00693-1 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | Mar 31, 2020 |
| Accepted: | Aug 7, 2020 |
| Published online: | Aug 13, 2020 |
| Published print: | Jun 1, 2021 |
Identifiers:
| Web of science: | WOS:000559432900004 |
| Scopus: | 2-s2.0-85089396168 |
| Elibrary: | 45360189 |
| Chemical Abstracts: | 2020:1591722 |
| PMID: | 32794112 |
| OpenAlex: | W3048461781 |