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目的:改进《中国药典》中维生素B_2片含量测定的供试品溶液的制备方法。方法:将原来的水浴溶解方法改为超声溶解。改进方法的维生素B_2的线性范围为4.0~14.0μg·ml~(-1)(r=0.999 8);平均回收率为96.1%,RSD为0.6%。结果:含量测定方法中供试品的两种溶解方法所得含量测定的结果基本一致。结论:改进方法快速、简便易行、结果准确,大大节约了工作时间,提高了工作效率。
OBJECTIVE: To improve the preparation method of the test solution for the determination of vitamin B 2 in “Chinese Pharmacopoeia”. Methods: The original water bath dissolved method changed to ultrasonic dissolution. The linear range of vitamin B 2 was 4.0 ~ 14.0μg · ml -1 (r = 0.999 8). The average recovery was 96.1% and the RSD was 0.6%. Results: The contents of the two dissolution methods of the test method for the determination of the content of the test results were basically the same. Conclusion: The improvement method is rapid, simple and easy, the result is accurate, the working time is greatly saved, and the work efficiency is improved.