Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Determination of Copper(II) ion with a nafion-ethylenediamine modified glassy carbon electrode

내피온-에틸렌디아민이 수식된 유리탄소전극으로 구리(II) 이온의 정량

  • Ko, Young Chun (Department of Nano-Chemical/Environmental Engineering, Daebul University) ;
  • Kim, Hee Cheol (Department of Chemistry, Graduate School, Chonnam National University)
  • 고영춘 (대불대학교 나노화학환경공학과) ;
  • 김희철 (전남대학교 대학원 화학과)
  • Received : 2007.04.16
  • Accepted : 2007.06.07
  • Published : 2007.06.28
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Abstract

Copper(II) ion was measured with the use of a perfluorinated sulfonated polymer-ethylenediamine (nafion-en) modified glassy carbon electrode. The electrode mechanism was based on the chemical reactivity of an immobilized layer (nafion-en) to yield complex $[Cu(en)_2]^{+2}$. The reduction potential peak by differential pulse voltammetry(DPV) was observed at -0.4402V(${\pm}0.0050V$) (vs. Ag/AgCl). The linear calibration curve was obtained from $1.0{\times}10^{-6}$ to $1.0{\times}10^{-4}M$ copper(II) ion concentration, and the detection limit(3s) was $1.96{\times}10^{-6}M$.

Perfluorinated sulfonated polymer-ethylenediamine(nafion-en)이 수식된 유리탄소전극을 이용하여 Cu(II) 이온을 정량하였다. 이 수식전극의 en은 Cu(II) 이온과 $[Cu(en)_2]^{+2}$의 착물을 형성한다. Nafion-en이 수식된 유리탄소전극에서 시차펄스전압전류법에 의한 Cu(II) 이온의 환원봉우리전위는 -0.4402V(${\pm}0.0050V$) (vs. Ag/AgCl)에서 측정되었고, 측정범위는 $1.0{\times}10^{-6}{\sim}1.0{\times}10^{-4}M$, 검출한계(3s)는 $1.96{\times}10^{-6}M$이었다.

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