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高效液相色谱法测定银黄胶囊中黄芩苷的含量
摘    要:目的:建立高效液相色谱(H PLC)法测定银黄胶囊中黄芩苷含量的方法。方法:采用 Shim -pack VP-ODSC18 柱(250.0m m ×4.6 m m ,5 μm)色谱柱,黄芩苷流动相为甲醇 0.4% 磷酸(5050),流速为 1.0 mL·min^-1,检测波长为 280 nm 。结果:黄芩苷在 0.223 - 1.366 μg范围内呈良好的线性关系,回归方程为 Y = 2.40 ×104X + 3.132 ×106(r= 0.999 9),平均回收率为99.88% ,RSD 为 0.89% ,重现性 RSD 为 0.30% 。结论:H PLC 法测定银黄胶囊中黄芩苷含量简便、快速、灵敏、准确、重现性好。

关 键 词:银黄胶囊  高效液相色谱法  黄芩苷  金银花  黄芩

Assay of Baicalin Content in Yinhuang Capsule by HPLC
Abstract:Objective:Establish high performance liquid chromatography(HPLC) method for the determination of Baicalin content in Yinhuang Capsule.Methods:Use Alltima Shim-pack VP-ODSC10 column(250 mm×4.6 mm,5 μm) as detached dowel and a mixture of methanol and phosphoric acid(5050) as mobile phase with flow rate of 1.0 mL·min^-1.As detector a spectrophotometer set at 280nm.Results:Baicalin shows good linear correlation at 0.223~1.366 μg range.The regression equation is Y=2.40×104X+3.132×106(r=0.999 9).The average recovery is 99.88% and RSD is 0.89%.Reproducibility RSD is 0.3%.Conclusion:HPLC method for the determination of Baicalin content in Yinhuang Capsule is simple,rapid,sensitive,accurate and reproducible.
Keywords:Yinhuang Capsule  high performance liquid chromatography  Baicalin  Jinyinhua  Huangqin
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