采用反相高效液相色谱法分离银杏叶提取物中黄酮类化合物并测定其中槲皮素含量。ＹＷＧＣ１８（０４６ｃｍ×１５ｃｍ）色谱柱，流动相甲醇水磷酸（５０∶４９８∶０２），检测波长３６０ｎｍ。回收率在９５３％～１０３２％之间，ＲＳＤ为１８６％。 Separation of flavonoids from Ginkgo biloba extract by RP-HPLC and determination of quercetin content. YWG-C18 (046cm×15cm) column, mobile phase methanol-water-phosphoric acid (50∶498:02), detection wavelength 360nm. The recovery rate was between 95.3% and 103% and 2%, and the RSD was 1.86%.