HELP法与正交投影法分析咖啡、茶叶中的咖啡因、茶碱、可可碱

Orthogonal Projection and HELP Applied to the Analysis of Caffeine Theohromine and Theophyline in Coffee, Tea and Cola

以HELP—正交投影法解析二维色谱重叠峰，提出了一种新的色谱定性方法，正交投影定性法，并将HELP—正交投影解析应用于实际分析体系中可可碱、茶碱与咖啡碱的定性定量分析．十分成功的对重叠严重的咖啡样中可可碱、茶碱与咖啡碱进行了解析，定性定量结果可靠，为复杂样品的色谱分析展示了一种新的途径．

The resohution of overlapping chromatographic peaks is studied in this paper, A new procedure， Orthogonal suits obtained is reliable with the recovery rate of 90％-95％． The Propoed method gives a nwe way to the resolution of complex system.