期刊
JOURNAL OF CLEANER PRODUCTION
卷 172, 期 -, 页码 475-480出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2017.09.277
关键词
Heavy metals; Horizontal migration; Risk assessment; Vertical distribution
资金
- Ministry of Science and Technology of China [2014-A18]
- School of Life Sciences in Shandong University
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.
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