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Evaluation and analysis of soil migration and distribution characteristics of heavy metals in iron tailings

机译:铁尾矿中重金属的土壤迁移和分布特征评价与分析

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摘要

Migration and transformation trend of heavy metals have close relationship with soil safety. In this research, we aim to provide reliable basis for prevention and management of local soil contaminants. We choose Anshan tailings for field investigations and laboratory research, analyze vertical and horizontal migration characteristics of five heavy metals (Cu, Zn, Pb, Cd, and Cr) and the role ofAmaranthus blitoides in tailings. According to Single factor contaminant index and Nemerow composite index, the five heavy metals condition different migration trend in the vertical direction (Cd Zn Cr Pb Cu) in the soil properties and threaten the groundwater of Anshan tailings. They had strong migration capability in horizontal direction resulting in surrounding pollution. The highest migration capability was found in Cr followed by Pb Zn Cd Cu under specific climatic condition. Amaranthus blitoides as dominant species can grow well in harsh environment and can effectively remove heavy metals in mine tailings. (C) 2017 Elsevier Ltd. All rights reserved.
机译:重金属的迁移转化趋势与土壤安全性密切相关。在这项研究中,我们旨在为预防和管理本地土壤污染物提供可靠的基础。我们选择鞍山尾矿进行现场调查和实验室研究,分析五种重金属(铜,锌,铅,镉和铬)的垂直和水平迁移特征,以及mar菜在尾矿中的作用。根据单因素污染指数和Nemerow综合指数,五种重金属在土壤性质上沿垂直方向(Cd> Zn> Cr> Pb> Cu)迁移趋势不同,并威胁着鞍山尾矿的地下水。它们在水平方向上具有很强的迁移能力,导致周围环境污染。在特定气候条件下,Cr的迁移能力最高,其次是Pb> Zn> Cd> Cu。 dominant菜作为优势种可以在恶劣的环境中生长良好,并且可以有效地去除矿山尾矿中的重金属。 (C)2017 Elsevier Ltd.保留所有权利。

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