Selective Determination of Vitamin B2 at Electrochemically Activated Glassy Carbon Electrode

Electrochemically activated glassy carbon electrodes were applied to the preconcentration and electroanalysis of Vitamin B2 (VB2) in multivitamin preparation. Voltammetric peak currents resulting from VB2 species adsorbed on activated electrodes showed linear response for VB2 concentrations in the range between 0.1 and 3.0 µM with a large slope of 12.2 A7emsp14;M–1 and a correlation coefficient of 0.996. The reproducibility of the voltammetric measurements was usually less than 7 % RSD for five replicate measurements. Common vitamin and metal species did not interfere in the determination.