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KMID : 1059519970410050246
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Journal of the Korean Chemical Society
1997 Volume.41 No. 5 p.246 ~ p.250
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Trace Measurement of Ruthenium by Adsorptive Stripping Voltammetry
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Case Myung-Zoon
Kwon Young-Soon
Kim So-Jin
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Abstract
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In the presence of optimum amounts of hydroxylamine, trace ruthenium(Ⅲ) can be conveniently determined in acidic (boric) media by coupling catalytic hydrogen processes with adsorptive accumulation of the catalyst, using differential pulse voltammetry. Cyclic voltammetry was used to characterize the redox and interfacial processes. Optimal experimental conditions were found to be a stirred borate (0.015 M, pH 2.5) solution containing 0.55 M hydroxylamine, a preconcentration potential of - 0.70 V, and a scan rate of 5 mV/s. With a 7 min accumulation period the detection limit was 3×10-10 M. The possible interferences by other platinum group metals are investigated.
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