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首页> 外文期刊>Eurasian Soil Science >Fractionation and mobilization of toxic elements in floodplain soils from Egypt, Germany, and Greece: A comparison study
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Fractionation and mobilization of toxic elements in floodplain soils from Egypt, Germany, and Greece: A comparison study

机译：埃及，德国和希腊洪泛区土壤中有毒元素的分离和迁移：比较研究

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摘要

Determining the chemical fractions of toxic elements (TEs) in soils is important to evaluate their mobilization and bioavailability. In this study, samples from three representative floodplain soils located close to the Rivers Nile (Egypt), Elbe (Germany), and Pinios (Greece) were used to link the soil formation and properties to the geochemical fractions and mobilization of cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn) in these soils. The Elbe soil showed the highest total concentration of the elements except for Ni, in which the Pinios soil had the highest amount. A significant amount (55-94%) of the elements was present in the Elbe soil in the potentially mobile (non-residual) fraction, while the amount of this fraction ranged between 9 and 39% in the Pinios soil and between 9 and 34% in the Nile soil. In the Elbe soil, most of the non-residual Ni, Pb, and Zn was associated with the Fe-Mn oxide fraction, while Cd was distributed in the soluble plus exchangeable fraction and Cu in the organic fraction. In the Nile and Pinios soils the Fe-Mn oxide fraction was the abundant pool for Cu, Ni, Pb, and Zn whereas Cd had the highest amount in the soluble plus exchangeable as well as in the carbonate fractions.
机译：确定土壤中有毒元素（TEs）的化学分数对于评估其动员和生物利用度很重要。在这项研究中，使用了位于尼罗河（埃及），易北河（德国）和皮尼奥斯（希腊）附近的三种代表性洪泛区土壤的样品，将土壤的形成和性质与地球化学成分和镉（Cd）的迁移联系起来。 ，土壤中的铜（Cu），镍（Ni），铅（Pb）和锌（Zn）。易北河土壤中除Ni之外的元素总浓度最高，其中Pinios土壤中Ni的含量最高。易北河土壤中存在大量（55-94％）的潜在可移动（非残留）级分元素，而松树土壤中该级分的含量介于9％至39％之间和9％至34％之间尼罗河土壤中的百分比。在易北河土壤中，大多数非残留的Ni，Pb和Zn与Fe-Mn氧化物组分有关，而Cd分布在可溶性和可交换组分中，而Cu则分布在有机组分中。在尼罗河和松树土壤中，Fe-Mn氧化物组分是Cu，Ni，Pb和Zn的丰富库，而Cd在可溶性组分，可交换组分和碳酸盐组分中含量最高。

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