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在容量分析中,滴定液浓度是否准确关系到整个定量的准确性。标定好的滴定液随着放置时间的延长可能会引起各种变化,导致浓度下降。为了方便医院制剂的药检工作,对常用滴定液的贮存时间进行了探讨。1 方法和结果按中国药典(85版)配制七种滴定液,置玻璃塞的
In volumetric analysis, the exact concentration of the titrant relates to the accuracy of the overall quantification. Calibration of the titration solution with the placement of time may cause a variety of changes, resulting in decreased concentration. In order to facilitate the drug testing of hospital preparations, the storage time of common titrant was discussed. 1 Methods and Results According to the Chinese Pharmacopoeia (85 edition) preparation of seven kinds of titration solution, set the glass stopper