目的:建立测定香桂化浊胶囊中大黄素含量的方法。方法:采用高效液相色谱法。色谱柱为HypersilC18(150mm×4.6mm,5μm),流动相为0.1mol.L-1磷酸二氢钠溶液(用磷酸调pH值至3.0)-甲醇-乙腈(30:35:35),检测波长为289nm,流速为1.2mL.min-1。结果:大黄素检测浓度在2.51~25.10μg.mL-1范围内与峰面积积分值呈良好线性关系(r=0.9999);平均加样回收率为98.68%,RSD=1.35%(n=9)。结论:本方法操作简便、灵敏、准确,可用于香桂化浊胶囊的质量控制。
OBJECTIVE:To establish the method for the content determination of emodin in Xianggui huazhuo capsules.METHODS:HPLC method was adopted.The determination was performed on Hypersil C18(150 mm×4.6 mm,5 μm) column with mobile phase consisted of 0.1 mol·L-1 sodium dihydrogen phosphate solution(pH adjusted to 3.0 with phosphoric acid)-methanol-acetonitrile(30:35:35) at the flow rate of 1.2 mL·min-1.The detection wavelength was set at 289 nm.RESULTS:The linear range of emodin were 2.51~25.10 μg·mL-1(r=0.999 9) with an average recovery of 98.68%(RSD=1.35%,n=9).CONCLUSION:The method is simple,sensitive and accurate for the quality control of Xianggui huazhuo capsules.