Potential of indigenous plant species for phytoremediation of metal(loid)-contaminated soil in the Baoshan mining area, China
文献类型： 外文期刊
作者： Pan, Pan 1 ; Lei, Mei 1 ; Qiao, Pengwei 1 ; Zhou, Guangdong 1 ; Wan, Xiaoming 1 ; Chen, Tongbin 1 ;
作者机构： 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A,Datun Rd, Beijing 100101, Peoples R China
2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
3.Minist Agr & Rural Affairs, Danzhou Sci Observing & Expt Stn Agroenvironm, Danzhou 571700, Hainan, Peoples R China
关键词： Metal(loid)s; Mining pollution; Hyperaccumulators; Phytoextraction; Phytostabilization
期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）
ISSN： 0944-1344
年卷期： 2019 年 26 卷 23 期
页码：
收录情况： SCI
摘要： A field survey was conducted to investigate metal(loid) concentration in soils and native plants in the Baoshan mining area for potential application in phytoremediation. Total concentrations of arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn) in soil varied from 125 to 6656, 5.10 to 1061, 568 to 49294, and 241 to 17296 mg kg(-1), respectively, showing severe contamination. Among 20 species native to this area, Pteris ensiformis accumulated 1091 mg kg(-1) As in the shoot, and its translocation factor (TF) was greater than 1, suggesting potential capacity for As phytoextraction. Boehmeria nivea, Aster prorerus, and Hydrocotyle sibthorpioides showed potential for phytoextraction of Cd due to their high accumulation of Cd in shoots (490.3, 175.4, and 128.5 mg kg(-1), respectively) and high TFs (92.0, 22.1, and 6.7, respectively). Eleusine indica and P. ensiformis were found to contain high concentrations of Pb (7474 mg kg(-1)) and Zn (1662 mg kg(-1)) in roots, but with low TFs for Pb (0.4) and Zn (0.2), suggesting potential capability for phytostabilization. There was a positive correlation (p < 0.01, N = 25) of TFs between the metal(loid)s, indicating a synergic interaction in the uptake of metal(loid)s by these plants. According to metal(loid) concentrations in shoots, bioconcentration factors (BFs), and TFs, as well as the botanical features such as wide occurrence, high biomass yield, and rapid growth of the plants, the five native species identified above have the potential for phytoremediation in the Baoshan mining area.
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