Accumulation and removal of heavy metal ions by insolubilized-DNA and its interaction. |
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| Authors: | M Yamada K Kato M Nomizu N Sakairi K Ohkawa H Yamamoto N Nishi |
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| Institution: | Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan. |
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| Abstract: | DNA was immobilized onto a porous glass bead by a treatment with UV irradiation. The immobilized DNA was insoluble in water and used for accumulation of heavy metal ion. When DNA-immobilized glass bead was added into aqueous solution containing heavy metal ions, such as Hg2+, Cd2+, Pb2+, Zn2+, Cu2+ and Fe3+, the concentration of these metal ions in the solution was decreased. However, the concentration of Mg2+ in the solution was not affected by the addition of the DNA-immobilized glass bead. These results suggested that UV-irradiated DNA selectively accumulated heavy metal ions. |
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