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    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/23603

    題名: Patterns of Metal Accumulation by Natural River Biofilms During Their Growth and Seasonal Succession
    Authors: Chien-Jung Tien;Colin S. Chen
    貢獻者: 生物科技系
    Date: 2013-05
    Issue Date: 2015-03-24 15:13:18 (UTC+8)
    Abstract: To evaluate the factors influencing patterns of metal accumulation by river biofilms, concentrations of chromium (Cr), nickel (Ni), copper (Cu), and lead (Pb) in biofilms from Erh-Jen River and San-Yeh-Kung Creek were investigated during their growth and seasonal succession. Different metal-accumulation patterns during biofilm development were observed between the two rivers. Mature biofilms (grown for 21–28 days) in both rivers showed maximum metal accumulation (?3.24 × 104, 1.55 × 104, 7.40 × 103, and 7.80 × 102 μg g?1 of Cr, Ni, Cu, and Pb, respectively) and bioconcentration factors (?7.15 × 105, 1.60 × 105, 2.60 × 105, and 4.22 × 105 l kg?1 of Cr, Ni, Cu, and Pb, respectively). These types of biofilms had the characteristics of being good metal accumulators and the ability to integrate metal-exposure conditions, suggesting that they were suitable biomonitors for metal-contaminated water. Seasonal succession in metal-accumulation ability of 1-month-old biofilms from Erh-Jen River was mainly affected by changes in bacterial and algal biomass and chemical oxygen demand in water, whereas that from San-Yeh-Kung Creek was primary influenced by concentrations of total nitrogen in water. Synergistic interaction between these four metals on metal-binding sites within biofilms was also shown.
    關聯: Archives of Environmental Contamination and Toxicology / v.64 n.4, P.605-616
    Appears in Collections:[生物科技學系] 期刊論文
    [生科系] 陳士賢
    [生科系] 田倩蓉

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