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- E-ISSN 2288-8985
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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,
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. Analytical Science and Technology, 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 <TEX>$[Cd(en)_2]^{2+}$</TEX>. The reduction peak potential by differential pulse voltammetry(DPV) was observed at <TEX>$-0.780({\pm}0.005)V$</TEX> vs. As/AgCl. The linear calibration curve was obtained in cadmium(II) ion concentration range <TEX>$5.0{\times}10^{-7}-2.0{\times}10^{-5}M$</TEX>, and the detection limit(3s) was <TEX>$2.20{\times}10^{-7}M$</TEX>. 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
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