Antimony release from contaminated mine soils and its migration in four typical soils using lysimeter experiments

文献类型： 外文期刊

第一作者： Zhao, Long

作者： Zhao, Long;Hou, Hong;Shangguan, Yu-xian;Qin, Yusheng;Zhang, Naiming

作者机构：

关键词： Antimony;Mobility;Migration;Lysimeter experiments;Sb mining soil

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Antimony (Sb) can pose great risks to the environment in mining and smelting areas. The migration of Sb in contaminated mine soil was studied using lysimeter experiments. The exchangeable concentration of soil Sb decreased with artificial leaching. The concentrations of Sb retained in the subsoil layers (5-25 cm deep) were the highest for Isohumosol and Ferrosol and the lowest for Sandy soil. The Sb concentrations in soil solutions decreased with soil depth, and were adequately simulated using a logarithmic function. The Sb migration pattern in Sandy soil was markedly different from the patterns in the other soils which suggested that Sb may be transported in soil colloids. Environmental factors such as water content, soil temperature, and oxidation-reduction potential of the soil had different effects on Sb migration in Sandy soil and Primosol. The high Fe and Mn contents in Ferrosol and Isohumosol significantly decreased the mobility of Sb in these soils. The Na and Sb concentrations in soils used in the experiments positively correlated with each other (P<0.01). The Sb concentrations in soil solutions, the Sb chemical fraction patterns, and the Sb/Na ratios decreased in the order Sandy soil > Primosol > Isohumosol > Ferrosol, and we concluded that the Sb mobility in the soils also decreased in that order. (C) 2016 Elsevier Inc. All rights reserved.

分类号： X`R12`R99

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