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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Electrochemical behavior and Application of Osmium-Cupferron Complex

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2003, v.16 no.3, pp.198-205


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Abstract

The ammonium salt of nitrosophenylhydroxylamine, called cupferron, has been used not only as the ligand but also as an oxidizing agent for adsorptive catalytic stripping voltammetry (AdCtSV). Cyclic voltammetry was used for elucidating the electrochemical behavior of Os-cupferron complex in 1 mM phosphate buffer. The optimal conditions for osmium analysis were found to be 1 mM phosphate buffer solution (pH 6.0) containing 0.1 mM cupferron at scan rate of 100 mV/s. By using the plot of reduction peak currents of linear scan voltammograms vs. osmium concentration, the detection limit was <TEX>$1.0{\times}10^{-7}M$</TEX>.

keywords
Electrochemical behavior, Os-Cupferron complex


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