Adsorptive Catalytic Wave of Chromium-Cupferron Complex

크롬-쿠페론 착물의 흡착 촉매파

  • Received : 2002.01.24
  • Published : 2002.06.25

Abstract

The interfacial accumulation of the chromium-cupferron complex and the catalytic wave of its redox process is characterized by cyclic voltammetry. One cathodic peak is observed in the forward scan at -1.45 V. Scanning in the reverse direction produces a inverted peak at -1.39 V, which is indicative of a catalytic process. The optimal conditions of inverted peak were found to be 1 mM borate buffer solution(pH 9.48) containing $1{\times}10^{-4}M$ cupferron, holding potential of -1.8 V and scan rate of 20 mV/s. Using main peak, a preconcentration time of 1 min results in a detection limit of $3.2{\times}10^{-10}M$.

Keywords

Catalytic wave;Chromium-Cupferron Complex

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Acknowledgement

Supported by : 가톨릭대학교