Abstract
A simple and sensitive electrochemical technique for the convenient determination of trace amounts of ruthenium was developed, based on the catalytic current of a Ru(III)–bromate system on the surface of a hanging mercury electrode at about −0.2 V versus Ag/AgCl reference electrode. The influence of reagent and instrumental variables was completely studied by factorial design analysis. Optimum analytical conditions for the determination of ruthenium were established. Ruthenium(III) can be determined in the range 0.005–0.350 μg/ml with a limit of detection of 0.003 μg/ml. The influence of potential interfering substances on the determination of ruthenium was studied. The method was evaluated by analyzing synthetic samples.
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