论文部分内容阅读
采用双波长薄层扫描法测定牛黄清胃丸中黄芩甙的含量，样品用甲醇提取，在聚酰胺板上经醋酸-乙醇（6∶1）二次展开方式分离后选择λR=280nm，λS=207nm进行扫描测定，平均回收率98．19％．RSD=1．47％。
The content of Astragalus in Niuhuangqingwei Pills was determined by dual-wavelength thin-layer scanning method. The samples were extracted with methanol and then separated on the polyamide plate by acetic acid-ethanol (6:1) two-fold deployment, and then λR = 280 nm, λS = 207nm scanning measurement, the average recovery rate of 98.19%. RSD = 1.47%.