KMID : 0382420020280050053
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Korean Journal of Environmental Health Society 2002 Volume.28 No. 5 p.53 ~ p.58
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Differential Pulse Voltammetry of Lead(II) Ion at NafionEDTA-Glycerol Modified Glassy Carbon Electrodes
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Park Sang-Hee
Park Chan-Ju Park Eun-Heui Jung Keun-Ho Ko Young-Chun
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Abstract
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A method for the detemination of lead(lI) ion using a nafion-EDTA(ethylene diamine tetraacetic acid)-glycerol modified glassy carbon electrode was proposed. Lead(lI) ion is accumulated at the electrode by complexation and electrostatic attraction with nafion-EDTA-glycerol and detected at -D.560:t 0.015V (vs. Ag/AgCl) by differential pulse voltammetry. For the determination of lead(Il) ion, a standard calibration curve is obtained from 10-¡¯ M lead(lI) ion to 10-7 M, and the detection limit(3s) is as low as 5.0 x 10-10 M.
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