Abstract
Vanadium has a very strong catalytic effect on the bromate oxidation of gallocyanine at pH of 4.0. The oxidation product of gallocyanine exhibit a voltammetric wave at + 0.10 V vs. Ag/AgCl reference electrode in 0.10 mol/l KNO3 medium. The linear scan voltammetric behaviour of the reaction products at HMDE has been studied and selected as the indicator component for the reaction. A detection limit of 0.05 ng/ml and calibration graph from 0.30–200.00 ng/ml vanadium were obtained. Vanadium in water and gasoline samples was determined by this method, with satisfactory results.
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Received: 26 September 1996 / Revised: 6 November 1996 / Accepted: 15 November 1996
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Ensafi, A., Naderi, B. Catalytic determination of ultra trace amounts of vanadium with detection by linear sweep voltammetry. Fresenius J Anal Chem 358, 480–483 (1997). https://doi.org/10.1007/s002160050450
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DOI: https://doi.org/10.1007/s002160050450