【摘要】 在 0 .1mol/LHClO4 -DMF溶液中 ,维生素A在铂工作电极上有一微分脉冲伏安阳极氧化峰 .峰电位为 0 .81V(vs.SCE) .峰电流与维生素A浓度在 2 .8× 10 -6～ 6 .0× 10 -5mol/L范围内呈良好的线性关系 .考察了电流性质 ,电极反应不可逆 .用该法测定了维生素A样品 .更多还原

【Abstract】 The differential pulse voltammtric oxidation of Vitamin A (VA) at a platinum electrode was used to determine the VA conten of some pharmaceutical preparations. In 0.1 mol/L HClO 4-DMF medium, the VA showed a differentical pulse voltammetic peak at 0.81 V. The peak current was directly proportional to the concentration of VA in the range of 2.8×10 -6 ～ 1.0×10 -4 mol/L. Cyclic voltammetry showed the electode reaction is reverseble with adsorption characteristics.更多还原