title: Accumulation of Pb, Cu, and Zn in native plants growing on contaminated sites and their potential accumulation capacity in Heqing, Yunnan.
abstract: Phytoremediation is one of the cost-effective and environmental friendly technologies used to remove contaminants from contaminated soils, which has been intensively studied during the last decade. Presently, few economical and effective remediation methods are available for the remediation of Pb contaminated sites. This study was conducted to assess the potential of 19 plants growing on contaminated sites in Pb mine area. Plants and associated soil samples were collected and analyzed for total metal concentrations. While total soil Pb, Cu and Zn concentrations varied from 1,239 to 4,311, 36 to 1,020 and 240 to 2,380 mg/kg, those in the plant shoots ranged from 6.3 to 2,029, 20 to 570, and 36 to 690 mg/kg, respectively. Among the plants, we found that one cultivated crop (Ricinus communis L.) and two native species (Tephrosia candida and Debregeasia orientalis) have a great potential for phytoremediation of Pb contaminated soils, the Pb hyperaccumulation capacity of the 3 plants was found as the order: R. communis > D. orientalis > T. candida in the investigated area.
authors.affiliation: Yunnan Institute of Environmental Science, Kunming 650034, China. lxh@yies.org.cn
authors.forename: Xiaohai
authors.initials: X
authors.lastname: Liu
authors.forename: Yuntao
authors.initials: Y
authors.lastname: Gao
authors.forename: Sardar
authors.initials: S
authors.lastname: Khan
authors.forename: Gang
authors.initials: G
authors.lastname: Duan
authors.forename: Aikui
authors.initials: A
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Ling
authors.forename: Leil
authors.initials: L
authors.lastname: Zhao
authors.forename: Zhonghan
authors.initials: Z
authors.lastname: Liu
authors.forename: Xuecan
authors.initials: X
authors.lastname: Wu
mesh_terms: D001673:Biodegradation, Environmental; D002681:China; D003300:Copper / Q000493:pharmacokinetics; D007854:Lead / Q000493:pharmacokinetics; D019216:Metals, Heavy / Q000493:pharmacokinetics*; D010944:Plants / Q000378:metabolism*; D012278:Ricinus / Q000378:metabolism; D012989:Soil Pollutants / Q000493:pharmacokinetics*; D031304:Tephrosia / Q000378:metabolism; D015032:Zinc / Q000493:pharmacokinetics
chemical_list: D019216:Metals, Heavy; D012989:Soil Pollutants; D007854:Lead; D003300:Copper; D015032:Zinc