Assessment of extraction methods for studying the fractional composition of Cu and Zn in uncontaminated and contaminated soils

Marina BURACHEVSKAYA; Tatiana MİNKİNA; Tatiana BAUER; Saglara MANDZHİEVA; Coşkun GÜLSER; Rıdvan KIZILKAYA; Svetlana SUSHKOVA; Vishnu RAJPUT

doi:10.18393/ejss.734601

Assessment of extraction methods for studying the fractional composition of Cu and Zn in uncontaminated and contaminated soils

Authors : Marina BURACHEVSKAYA, Tatiana MİNKİNA, Tatiana BAUER, Saglara MANDZHİEVA, Coşkun GÜLSER, Rıdvan KIZILKAYA, Svetlana SUSHKOVA, Vishnu RAJPUT

Pages : 231-241

Doi:10.18393/ejss.734601

View : 33 | Download : 11

Publication Date : 2020-07-01

Article Type : Research Paper

Abstract :This study is aimed at elucidating the fractionation of Cu and Zn in Haplic Chernozem and its alteration under the contamination to evaluate the extraction selectivity of different extractants and thus the efficiency of three sequential extraction schemes insert ignore into journalissuearticles values(Tessier and McLaren five-step and modified BCR three-step methods);. General trends in the distribution of Cu and Zn speciations revealed with these three fractionation schemes suggest that they can be applied for the soils and the obtained results can be compared. Low mobility of potentially toxic metals insert ignore into journalissuearticles values(PTM); in the studied soil is suggested not only by their high content in residual fraction, but also by low contents of exchangeable and carbonate bound fractions insert ignore into journalissuearticles values(not more than 4-5 % Cu and 5-7 % Zn in the first two fractions);. The highest contribution to the absorption and retention of Cu delivered from anthropogenic sources is made by organic matter and sesquioxides insert ignore into journalissuearticles values(up to 29 %);; for Zn, by the nonsilicate Fe and Mn compounds insert ignore into journalissuearticles values(up to 25 %);. However, the pattern of PTM extraction from soils varies during the application of different fractionation methods. The Tessier method is distinguished by a higher extractability relative to organic matter and sesquioxides. Therefore, this method is more informative for the contaminated soils. The McLaren method makes it possible to track the weakly bound species of compounds without the risk of involving other soil components. The BCR method is marked by simplicity of application and, therefore, recommended only for the noncalcic or low-calcic soils.
Keywords : Assessment, soil, trace metals, selective sequential schemes, mobility, metal forms

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