高效液相色谱法测定复方芩地胶囊中黄芩苷的含量

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目的建立复方芩地胶囊中黄芩苷的含量测定方法。方法色谱柱为Agilent Eclipse XDB-C18(4.6 mm×150 mm,5μm);流动相为甲醇-0.1%磷酸(47:53);流速为1.0ml/min;检测波长为280 nm;柱温为25℃;进样量为10μl。结果黄芩苷在2.160~43.20μg/ml范围内与其峰面积线性关系良好,回归方程为:Y=63.29 X-1.016,r=0.9999;平均回收率(n=6)为99.58%,相对标准差为2.13%。结论本方法快速、简便、准确,可用于复方芩地胶囊的含量测定和质量控制。 Objective To establish a method for the determination of baicalin in Fuqianqindi capsule. Methods The column was Agilent Eclipse XDB-C18 (4.6 mm × 150 mm, 5 μm). The mobile phase consisted of methanol-0.1% phosphoric acid (47:53), the flow rate was 1.0 ml / min, the detection wavelength was 280 nm and the column temperature was 25 ℃; injection volume of 10μl. Results Baicalin had a good linear relationship with its peak area in the range of 2.160 ~ 43.20μg / ml. The regression equation was: Y = 63.29 X-1.016, r = 0.9999. The average recovery was 99.58% (n = 6) 2.13%. Conclusion The method is rapid, simple and accurate and can be used for the determination and quality control of compound Qinlian capsule.
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