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我们试用以0.05mmol/L盐酸溶液为溶剂,用紫外分光光度法对乙酰螺旋霉素片进行含量测定,方法简便可靠,兹介绍如下。 1 仪器与试药 日立u-3210紫外分光光度计;乙酰螺旋霉素标准品(中国药品生物制品检定所);乙酰螺旋霉素片为市售品;试剂均为分析纯。 2 方法与结果 2.1 测定波长选择 精密称取乙酰螺旋霉素标准品约40mg,置100ml量瓶中,加0.05mmol/L盐酸溶液使乙酰螺旋霉素溶解并稀释至刻度,摇匀,精密吸取2ml置50ml量瓶中,加
We try to 0.05mmol / L hydrochloric acid solution as a solvent, UV spectrophotometry acetylspiramycin tablets for content determination, the method is simple and reliable, it is introduced as follows. 1 instruments and reagents Hitachi u-3210 UV spectrophotometer; acetyl spiramycin standard (China Pharmaceutical and Biological Products); acetyl spiramycin tablets for commercial products; reagents were of analytical grade. 2 Methods and Results 2.1 Determination of wavelength selection accurately weighed about 40mg acetylspiramycin standard, set 100ml volumetric flask, add 0.05mmol / L hydrochloric acid solution to acetyl spiramycin dissolved and diluted to the mark, shake, precision drawing 2ml Set 50ml volumetric flask, plus