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过量四苯硼钠(1)标准溶液加到含样品的醋酸盐缓冲液(pH 5.3)中定量地沉淀盐酸哌仑西平,过量的1用 Tl_2SO_4滴定。本法准确、快速、简单。平均回收率为99.71%,变异系数为0.38%。
Precipitated pirenzepine hydrochloride was precipitated quantitatively by adding sodium tetraphenylborate (1) standard solution to the sample-containing acetate buffer (pH 5.3), and excess 1 was titrated with Tl 2 SO 4. This law is accurate, fast and simple. The average recovery was 99.71% with a coefficient of variation of 0.38%.