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http://dx.doi.org/10.13160/ricns.2014.7.3.188

Determination of Cobalt(III) Ion Using a Nafion-Ethylenediamine Modified Glassy Carbon Electrode  

Kim, Seok Jin (Suncheon Hyosan High School)
Ko, Young Chun (Graduate School of Education, Sehan University)
Publication Information
Journal of Integrative Natural Science / v.7, no.3, 2014 , pp. 188-192 More about this Journal
Abstract
Determination of cobalt(III) ion with a perfluorinated sulfonated polymer-ethylenediamine (nafion-en) modified glassy carbon electrode is studied. It is based on the chemical reactivity of an immobilized layer, nafion-en, to yield complex $[Co(en)_3]^{3+}$. The reduction peak potential by differential pulse voltammetry (DPV) is observed at $-0.437{\pm}0.047$ V (vs. Ag/AgCl). The linear calibration curve is obtained in cobalt(III) ion concentration range $1.0{\times}10^{-8}{\sim}1.0{\times}10^{-3}M$ ($5.893{\times}10^{-12}{\sim}5.893{\times}10^{-5}g/mL$).
Keywords
Cobalt(III) Ion; Nafion-Ethylenediamine Modified Glassy Carbon Electrode; Differential Pulse Voltammetry;
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