HPLC法测定氨咖黄敏胶囊中对乙酰氨基酚、咖啡因的含量

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目的建立以HPLC法同时测定氨咖黄敏胶囊中对乙酰氨基酚、咖啡因的含量。方法色谱柱C18(250mm),流动相:甲醇-4.2%冰醋酸溶液(3:7),流速:1.0ml·min^-1,检测波长为275nm,进样量为20μl。结果对乙酰氨基酚,咖啡因的线性范围分别为25~200μg·ml^-1(r=0.9999)、2~12μg·ml^-1(r=0.9998),平均回收率分别为99.8%、100.1%。结论本方法简便、快速、准确、专属性高,可用于氨咖黄敏胶囊中对乙酰氨基酚、咖啡因的含量
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