本文采用pH指示剂吸收度比值法测定氟尿嘧啶的含量,并就实验条件及影响测定的因素进行了探讨;给出了氟尿嘧啶的工作曲线,并利用此工作曲线在不同温度下进行了回收率试验。本法准确度高、精密度良好、变异系数小,测定样品时不需要标准对照品,具有方法便简的优点。 In this paper, the concentration of fluorouracil was determined by the ratio of pH indicator absorbance, and the experimental conditions and the factors affecting the determination were discussed. The working curve of fluorouracil was given and the recovery test was carried out by using this working curve at different temperatures. This method has the advantages of high accuracy, good precision and small coefficient of variation, and does not require standard reference materials for determination of samples, which has the advantages of simple method.