叶酸是一种在生理上有重要作用的维生素 B族化合物。常用于测定叶酸的方法有光度法、色谱法、放射化学法、荧光光谱法等。叶酸具有电活性 ,但目前采用电化学方法测定叶酸的报道甚少且局限于极谱法。本文利用染料修饰电极采用示差脉冲溶出伏安法测定叶酸 ,具有简便快速 ,灵敏度高 ,线性范围宽 ,精密度高等特点。 Folic acid is a physiologically important vitamin B family compound. Commonly used in the determination of folic acid are spectrophotometry, chromatography, radiochemical methods, such as fluorescence spectroscopy. Folic acid is electrically active, but there are few reports on the determination of folic acid by electrochemical methods and is limited to polarography. In this paper, the use of dye-modified electrode differential pulse stripping voltammetry determination of folic acid, with simple and fast, high sensitivity, linear range, high precision and so on.