Abstract: Studies on the Essential oil Components of Tooma sinensis Leaf(2) Qualitative Detrminafion of the Essential Oil Components by GC/MSGu Yueling;Hu Gengyuan(Centre of Analysis and Measurement,Zhejiang University,Hangzhou 310027,China)Fu Shuiyu(Deparment of Chemistry,Hangzhou Teacher's College,Hangzhou 310014,China)Received Abstract:The qualitative determination results of the essential oil of Tooma sinensis leaf by using GC/MS are reported in this paper.The total 55 components which consist of 38oxygen-containing compounds and 15 hydrocarbons compounds as well as 2 nitrogencontaining compounads have been found.To whom the respondence shoudl be addressed.Keywords:leaf of Tooma sinensis,essential oil,qualitative determination,GC/MS