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采用薄层扫描法测定消炎利胆片中穿心莲内酯的含量．样品以乙醇直接提取，氯仿-乙酸乙酯-甲醇（10：10：1）为展开剂，测定波长为235nm，平均回收率为102．5％。测定方法简便、准确、灵敏度高．
The content of andrographolide in Xiaoyanlidan Tablets was determined by TLC scanning. The sample was directly extracted with ethanol and chloroform-ethyl acetate-methanol (10:10:1) was used as the developer. The wavelength was 235 nm and the average recovery was 102.5%. The measurement method is simple, accurate and high sensitivity.