Determination of baicalin in Kangdeling capsule by HPLC
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摘要: 目的 建立康得灵胶囊中黄芩苷的HPLC测定方法。 方法 色谱柱为Agilent Tc-C18色谱柱(4.6 mm×250 mm,5 μm),柱温为30 ℃;流动相为乙腈-0.5‰磷酸溶液(26:74),流速为1.0 ml/min,检测波长265 nm。 结果 黄芩苷保留时间约为16 min。以峰面积(Y)对进样浓度(X, μg/ml)线性回归,得回归方程:Y=22 114.67 X-112 836.7,r=0.998 8,线性范围5.410~108.2 μg/ml。平均加样回收率为98.78%,RSD为0.74%。 结论 本方法操作简便,测定结果准确可靠,可用于康得灵胶囊中黄芩苷的含量测定。Abstract: Objective To establish an HPLC quantitative method for the content determination of baicalin in Kangdeling capsule. Methods The chromatography column was Agilent Tc-C18-WR (4.6 mm×250 mm,5 μm),and the column temperature was 30 ℃.The mobile phase consisted of acetonitrile and 0.5‰ phosphoric acid (26:74).The flow rate was 1.0 ml/min, and the detection wavelength was 265 nm. Results The retention time of baicalin was about 16 min. The calibration equation was Y=22 114.67 X-112 836.7(r=0998 8)with good linearity in the range of 5.410-108.2 μg/ml for baicalin. The average recovery was 98.78% while RSD were 0.74%. Conclusion This method is simple, time-saving and accurate which could be used to routine analysis of baicalin in Kangdeling capsule.
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