摘要:用超临界流体色谱法(SFC)测定茶叶中的,在二氧化碳流动相中加入体积分数为5%的甲醇后,得到了良好的分离效果该方法具有样品前处理简单,共存组分不干扰测定,分析速度快等优点,可以用于茶叶中的快速分析
关键词:超临界流体色谱;茶叶;
中图分类号:0658 文献标识码:A 文章编号:10008713(2002)01007503
Determination of Caffeine in Teas by Supercritical Fluid Chromatography
GU0 Ya-dong
(Department ofPharmacy,KunrningMedical College,Kunming650031,Ehirm)
Abstract:A rapid supercridcal fluid chromatog raphic method for the determination of caffeine in tea is described.It is shown that a mobile phase of carbon dioxide,mod[fied with 5% methanol achieved exedlent results.Themethodis simpleinthe samplepreparation.Othermmponents containedinthe sample do not interfere the measurement It can ha used to determ ine caffeine in tea rapidly.
Key words:supercritical flu{d chromatography;tea;caffeine 固相萃取小柱
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