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应用甲醇提取-乙醚萃取-双波长薄层扫描法测定妇乐冲剂中延胡索乙素的含量，平均回收率99．3％，RSD为2.61％。薄层展开剂为正己烷-醋酸乙酯-浓氨水（6：4：0．2）。
The content of tetrahydropalmatine in Fule Tablet was determined by methanol extraction-ether extraction-wavelength dual-wavelength scanning method. The average recovery rate was 99.3% and the RSD was 2.61%. The thin layer developing agent was n-hexane-ethyl acetate-concentrated aqueous ammonia (6:4:0.2).