近年来香豆素含量测定方法有气相色谱法、高压液相色谱法、紫外分光光度法、荧光分光光度法及簿层扫描定量法。气相色谱法由于气化温度高,容易产生变化。高压液相色谱法仪器昂贵。薄层目测定量操作简单,不需要特殊设备,但难免目测主观误差,方法仍欠完善,需要进一步改进。我们利用薄层与紫外结 In recent years, coumarin content has been determined by gas chromatography, high pressure liquid chromatography, ultraviolet spectrophotometry, fluorescence spectrophotometry, and scanning layer quantification. Due to the high gasification temperature, gas chromatography is prone to change. High pressure liquid chromatography instruments are expensive. Thin layer measurement is easy to operate and does not require special equipment, but it is inevitable to visually detect subjective errors. The method is still not perfect and needs further improvement. We use thin layers and UV junctions