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

Stripping Voltammetric Determination of Osmium

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1997, v.10 no.2, pp.114-118
Kwon, Young-Soon
Kim, So-Jin
Czae, Myung-Zoon
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Abstract

A stripping voltammetric scheme for the determination of osmium, based on the adsorptive accumulation of osmium in the presence of hydroxylamine, was described. Cyclic voltammetry was used to characterize the redox and interfacial processes. Optimal experimental conditions were found to be a stirred 0.05M hydroxylamine hydrochloride solution(pH 1.8), accumulation at -0.65V for 60s, and a differential pulse mode with a scan rate of 10mV/s. The detection limit was <TEX>$6.3{\times}10^{-8}M$</TEX>(12ppb) with the optimal condition.

keywords
Adsorptive accumulation, Stripping voltammetry, Osmium


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