Abstract:The present work explores, for the first time, the electrocatalytic oxidation of ascorbic acid (AscH 2 ) and its determination in the presence of uric acid (UA) on the in situ activated 4-nitrophthalonitrile modified carbon paste electrode. The kinetic constant k for the catalytic reaction for the electrocatalytic oxidation of ascorbic acid, evaluated by cyclic voltammetry, chronoamperometry and RDE voltammetry provided values around 10 6 L mol À1 s
À1. The sensor provided a linear response range for AscH 2 an… Show more
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