一阶导数分光光度法测定盐酸麻黄碱滴鼻剂的含量
First order derivative UV spectrophotometry of ephedrine hydrochloride nasal drops
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摘要: 本文采用一阶导数分光光度法,不经分离直接测定盐酸麻黄碱滴鼻剂的含量,可以消除尼泊金乙醋的干扰,在5～25μg/ml的浓度范围内,具有良好的线性关系,r=0.9999(n=5).平均回收率为99.83%,相对标准差为0.49%.方法简便快速,结果准确。Abstract: The first order derivative UV spectrophotometry was for determination of ephedrine hydrochloride in its nasal drops to eliminate interference of ethyl p-hydroxyhenzoate.A good linearity has shown in the concentration of 5～25μg/ml,r=0.9999(n=5).The average recovery was 99.83% and cv was 0.49%.The method is simple,rapid and accurate.
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