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Differential Pulse Voltammetric Determination of Iron(II) ion with a Nafion-Ethylenediamine Modified Glassy Carbon Electrode

Nafion-ethylenediamine이 수식된 유리탄소전극에 의한 시차펄스전압전류법으로 철(II) 이온의 정량

  • Published : 2003.04.20

Abstract

Determination of iron(II) ion with a perfluorinated sulfonated polymer(nafion)-ethylenediamine(en) modified glassy carbon electrode was studied. It was based on the chemical reactivity of an immobilized layer(nafion-en) to yield complex $[Fe(en)_3]^{+2}$. The oxidation peak potential by differential pulse voltammetry(DPV) was observed at 0.340${\pm}$0.015 V(vs. Ag/AgCl). The linear calibration curve was obtained in iron(II) ion concentration range $5{\times}10^{-6}{\sim}0.2{\times}10^{-3} M(0.28{\sim}11.17\; mg/L)$, and the detection limit(3s) was $1.89{\times}10^{-5}$M(1.056 mg/L).

Keywords

Iron(II) ion;Differential Pulse Voltammetry(DPV)

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