title: Screening the phytoremediation potential of desert broom (Baccharis sarothroides Gray) growing on mine tailings in Arizona, USA.
abstract: The metal concentrations in a copper mine tailings and desert broom (Baccharis sarothroides Gray) plants were investigated. The metal concentrations in plants, soil cover, and tailings were determined using ICP-OES. The concentration of copper, lead, molybdenum, chromium, zinc, arsenic, nickel, and cobalt in tailings was 526.4, 207.4, 89.1, 84.5, 51.7, 49.6, 39.7, and 35.6mgkg(-1), respectively. The concentration of all elements in soil cover was 10-15% higher than that of the tailings, except for molybdenum. The concentration of copper, lead, molybdenum, chromium, zinc, arsenic, nickel, and cobalt in roots was 818.3, 151.9, 73.9, 57.1, 40.1, 44.6, 96.8, and 26.7mgkg(-1) and 1214.1, 107.3, 105.8, 105.5, 55.2, 36.9, 30.9, and 10.9mgkg(-1) for shoots, respectively. Considering the translocation factor, enrichment coefficient, and the accumulation factor, desert broom could be a potential hyperaccumulator of Cu, Pb, Cr, Zn, As, and Ni.
authors.affiliation: The University of Texas at El Paso, El Paso, TX 79968, USA.
authors.forename: Nazmul
authors.initials: N
authors.lastname: Haque
authors.forename: Jose R
authors.initials: JR
authors.lastname: Peralta-Videa
authors.forename: Gary L
authors.initials: GL
authors.lastname: Jones
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Gill
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Gardea-Torresdey
mesh_terms: D001130:Arizona; D001151:Arsenic / Q000493:pharmacokinetics; D031175:Baccharis / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002857:Chromium / Q000493:pharmacokinetics; D003035:Cobalt / Q000493:pharmacokinetics; D003300:Copper / Q000493:pharmacokinetics; D004784:Environmental Monitoring / Q000379:methods; D007220:Industrial Waste; D007854:Lead / Q000493:pharmacokinetics; D019216:Metals, Heavy / Q000493:pharmacokinetics*; D008906:Mining; D008982:Molybdenum / Q000493:pharmacokinetics; D009532:Nickel / Q000493:pharmacokinetics; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000493:pharmacokinetics*; D013054:Spectrophotometry, Atomic; D015032:Zinc / Q000493:pharmacokinetics
chemical_list: D007220:Industrial Waste; D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants; D002857:Chromium; D007854:Lead; D003035:Cobalt; D003300:Copper; D009532:Nickel; D008982:Molybdenum; D015032:Zinc; D001151:Arsenic