【摘要】 目的:采用反相高效液相色谱法测定镇咳宁胶囊中甘草次酸的含量。方法:色谱柱为HypersilC18,流动相为甲醇-水-冰醋酸(87∶13∶2.5),流速为1.0ml/min,检测波长为254nm,柱温为室温。结果:甘草次酸检测浓度在10～120μg/ml范围内线性关系良好(r=0.9999),平均加样回收率为99.68%(RSD=0.49%)。结论:本法简便、快速、准确,可用于镇咳宁胶囊的含量测定。更多还原

【Abstract】 OBJECTIVE:To determine the content of glycyrrhetic acid in zhenkening capsules by RP-HPLC.METHODS:The separation was performed on Hypersil C 18,the mobile phase consisted of methanol-water-glacial acetic acid(87∶13∶2.5)with flow rate at 1.0ml/min and detection wavelength at 254nm,the column temperature was set at room temperature.RE-SULTS:The calibration cure of glycyrrhetic acide was linear in the concentration range of 10～120μg/ml(r=0.9999),the average recovery was 99.68%(RSD=0.49%).CONCLUSION:This method is simple,fast,accurate,and suitable for the determination of glycyrrhetic acid in zhenkening capsules.更多还原