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采用双波长薄层扫描法测定了杠板归糖浆中槲皮素的含量，平均回收率为９９．４６％，rrrrrrrrrnＲＳＤ为３．６５％，方法可行，重现性好。
The content of quercetin in Liaobangui Syrup was determined by dual-wavelength thin-layer scanning method. The average recovery rate was 99.46%, and the RSD was 3.65%, feasible and reproducible.