Cathodic voltammetry of riboflavin at platinum and gold rotating disc electrodes.
The electroreduction of riboflavin (FMN) has been examined by cathodic rotating disc voltammetry in acidic and basic media at platinum and gold electrodes. It has proved to be diversely reducible best at gold electrode in the alkaline media. Rapid voltametric determination of the substance at gold electrode was effective and gave a mean standard deviation of 1%. Riboflavin at platinum electrode is cathodically active but the voltammograms do not obey the Levich relationship and adsorption destroys the electrode activity. The technique can be conveniently applied to the rapid determination of riboflavin in pure solution and in formulated products.
Hussein
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Department of Chemistry, University of Exeter, Stocker Road, Exeter, Ex4 4QD, UK.
Waqar
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