title: Uptake of metals and metalloids by plants growing in a lead-zinc mine area, Northern Vietnam.
abstract: This study was conducted to evaluate the phytoremediation and phytomining potential of 10 plant species growing naturally at one of the largest lead-zinc mines in Northern Vietnam. Total concentrations of heavy metals and arsenic were determined in the plant and in associated soil and water in and outside of the mine area. The results indicate that hyperaccumulation levels (mg kg(-1) dry weight) were obtained in Houttuynia cordata Thunb. (1140) and Pteris vittata L. (3750) for arsenic, and in Ageratum houstonianum Mill. (1130), Potamogeton oxyphyllus Miq. (4210), and P. vittata (1020) for lead. To the best of our knowledge, the present paper is the first report on metal accumulation and hyperaccumulation by H. cordata, A. houstonianum, and P. oxyphyllus. Based on the obtained concentrations of metals, bioconcentration and translocation factors, as well as the biomass of these plants, the two latter species and P. vittata are good candidates for phytoremediation of sites contaminated with arsenic and multi-metals. None of the collected plants was suitable for phytomining, given their low concentrations of useful metals (e.g., silver, gallium, and indium).
authors.affiliation: Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan.
authors.forename: Thi Hoang Ha
authors.initials: TH
authors.lastname: Nguyen
authors.forename: Masayuki
authors.initials: M
authors.lastname: Sakakibara
authors.forename: Sakae
authors.initials: S
authors.lastname: Sano
authors.forename: Trong Nhuan
authors.initials: TN
authors.lastname: Mai
mesh_terms: D001151:Arsenic / Q000032:analysis; D004787:Environmental Pollution / Q000032:analysis; D052918:Environmental Restoration and Remediation; D007202:Indicators and Reagents; D007854:Lead; D008670:Metals / Q000032:analysis*; D019216:Metals, Heavy / Q000032:analysis; D008906:Mining; D010944:Plants / Q000737:chemistry / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis; D013045:Species Specificity; D014744:Vietnam; D014874:Water Pollutants, Chemical / Q000032:analysis; D015032:Zinc
chemical_list: D007202:Indicators and Reagents; D008670:Metals; D019216:Metals, Heavy; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D007854:Lead; D015032:Zinc; D001151:Arsenic