复方卡那霉素眼药水中卡那霉素和地塞米松的含量测定
THE CHINESE JOURNAL OF MODERN APPLIED PHARMACY(2000)
Abstract
目的:解决复方卡那霉素眼药水中卡那霉素和地塞米松的含量测定问题.方法:在复方卡那霉素眼药水中加入衍生试剂,使卡那霉素形成二氢吡啶衍生物,利用其在紫外有吸收的特点进行测定.地塞米松的测定因受到对羟基苯甲酸乙酯的干扰,所以采用双波长分光光度法进行测定.结果:卡那霉素在8~20μg/ml范围内呈线性r=0.9998,地塞米松在12~20μg/ml范围内呈线性r=0.9998,卡那霉素和地塞米松的平均回收率分别为 =99.92%(RSD为0.40%)和=99.52% (RSD为0.42%).结论:方法快速,简便、准确.
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