目的　建立测定药剂中维生素C含量的分析方法。方法　采用流动注射技术与分光光度法相结合。用 0 0 5%的Fe(Ⅲ ) - 1 ,1 0 -二氮杂菲为显色剂 ,在入max为 50 4nm处测定吸光度值。结果　标准曲线在 0 0 0 6 0 0 μg/ml范围内线性良好 ,平均回收率 98 4% ,RSD为 0 2 6% 0 98% ,检出限 0 0 2 μg/ml。结论　此方法测定药剂中维生素C含量 ,结果准确、可靠 Objective To establish a method for the determination of vitamin C in pharmaceutical preparations. Methods Flow injection and spectrophotometry were combined. With 0 0 5% of Fe (Ⅲ) - 1, 1 0 - phenanthroline as a developer, the absorbance value measured at max 50 4nm. Results The calibration curve showed a good linearity in the range of 0 0 0 6 0 0 μg / ml with an average recovery of 98 4% and a RSD of 0 2 6% 0 98% with a detection limit of 0 0 2 μg / ml. Conclusion This method of determination of vitamin C content in medicine, the results are accurate and reliable