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- E-ISSN 2288-8985
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Adsorptive Catalytic Wave of Chromium-Cupferron Complex
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2002, v.15 no.3, pp.4-220
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(2002). Adsorptive Catalytic Wave of Chromium-Cupferron Complex. Analytical Science and Technology, 15(3), 4-220.
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Abstract
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 1×10-4 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 3.2×10-10 M.
- keywords
- Catalytic wave, Chromium-Cupferron Complex
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