Zheng Huang, Zhang Zezhou, Xing Xinli, Hu Tianpeng, Qu Chengkai, Chen Wei, Zhang Jiaquan
Laboratory of Basin Hydrology and Wetland Eco-restoration, China University of Geosciences, Wuhan, 430074, China.
School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China.
Bull Environ Contam Toxicol. 2019 Jan;102(1):92-97. doi: 10.1007/s00128-018-2501-7. Epub 2018 Nov 19.
Twenty-one soil samples and two dominant plant species (Elsholtzia splendens and Imperata cylindrical) were collected in Tonglushan Cu-Fe deposit, central China. Chemical analysis results showed that the soil contained low-level nutrients and high concentrations of potentially toxic metals. The geoaccumulation index results indicated that the study area was polluted by Cu-Zn-Cd-Pb. The levels of Cu in plant species were highest, followed by Zn, Pb, and Cd. The highest levels of Zn (261 mg kg), Cd (6.33 mg kg) and Pb (12.6 mg kg) were found in the leaf of Elsholtzia splendens and the highest concentration of Cu (1158 mg kg) was found in the root of Imperata cylindrica. Potentially toxic metals uptake and accumulation abilities were investigated by the bioconcentration factor and translocation factor, respectively. The results suggested that the Elsholtzia splendens may be a suitable candidate for Cd clean up using phytoextraction.
在中国中部的铜绿山铜铁矿区采集了21份土壤样本和两种优势植物物种（海州香薷和白茅）。化学分析结果表明，土壤养分含量低，潜在有毒金属浓度高。地累积指数结果表明，研究区域受到铜、锌、镉、铅的污染。植物物种中铜的含量最高，其次是锌、铅和镉。海州香薷叶片中锌（261毫克/千克）、镉（6.33毫克/千克）和铅（12.6毫克/千克）的含量最高，白茅根部铜的含量最高（1158毫克/千克）。分别通过生物富集系数和转运系数研究了潜在有毒金属的吸收和积累能力。结果表明，海州香薷可能是利用植物提取法修复镉污染土壤的合适候选植物。
