Determination of Cadmium(II) Ion Using the Nafion-Ethylenediamine-Modified Glassy Carbon Electrode

Kim, Jin Ah; 김진아; Ko, Young Chun; 고영춘; Park, Chan Ju; 박찬주; Park, Byung Ho; 박병호; Chung, Keun Ho; 정근호

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.14, No.2

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Determination of Cadmium(II) Ion Using the Nafion-Ethylenediamine-Modified Glassy Carbon Electrode

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2001, v.14 no.2, pp.123-130

Kim, Jin Ah
Ko, Young Chun
Park, Chan Ju
Park, Byung Ho
Chung, Keun Ho

Kim, J. A., Ko, Y. C., Park, C. J., Park, B. H., & Chung, K. H. (2001). Determination of Cadmium(II) Ion Using the Nafion-Ethylenediamine-Modified Glassy Carbon Electrode. , 14(2), 123-130.

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Abstract

Determination of cadmium(II) ion with a perfluorinated sulfonated polymer-ethylenediamine(nafion-en) modified glassy carbon electrode was studied. It was based on the chemical reactivity of an immobilized layer(nafion-en) to yield complex $[Cd(en)_2]^{2+}$. The reduction peak potential by differential pulse voltammetry(DPV) was observed at $-0.780({\pm}0.005)V$ vs. As/AgCl. The linear calibration curve was obtained in cadmium(II) ion concentration range $5.0{\times}10^{-7}-2.0{\times}10^{-5}M$, and the detection limit(3s) was $2.20{\times}10^{-7}M$. The detection limit of nafion-en modified glassy carbon electrode has been shown about 14 higher sensitivity than a bare glassy carbon electrode.

keywords: nafion (perfluorinated sulfonated polymer)-ethylenediamine modified glassy carbon electrode, determination of cadmium (II) ion, differential pulse voltarnmetry