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目的:对普罗碘铵注射液两种含量测定方法进行比较,以确证二氯荧光黄指示剂法的可行性。方法:分别采用铬酸钾指示剂法和二氯荧光黄指示剂法进行普罗碘铵注射液的含量测定,同时进行精密度和回收率测定。结果:两种方法测定结果相近,精密度好,铬酸钾指示剂法和二氯荧光黄指示剂法的平均回收率分别为99.40％和99.28％,RSD分别为0.88％和0.59％。结论:二氯荧光黄指示剂法用于普罗碘铵注射液的含量测定终点变化明显,测定结果准确。
OBJECTIVE: To compare the two methods for the determination of propionium iodide injection in order to confirm the feasibility of dichloro-fluorescein indicator method. Methods: The contents of propionium iodine injection were determined by potassium chromate indicator method and dichloro-fluorescein indicator method, respectively. The precision and recovery were also determined. Results: The results of the two methods were similar and the precision was good. The average recoveries of potassium chromate indicator and dichloro-fluorescein indicator were 99.40% and 99.28%, respectively. The RSDs were 0.88% and 0.59%, respectively. Conclusion: Dichloro-Fluorescent indicator method for the determination of the content of propionium iodide changes significantly end point, the determination accuracy.