A novel method for the determination of volatile components in tobacco was established by using Thermal Desorption-Gas Chromatography/Mass Spectrometry.The volatile components were extracted and enriched by Thermal Desorption,and then analysised by GC-MS.The relative content of the volatile components were quantitated by Internal Standard Method.The result indicated that the contents of furan and pyran in Yunnan tobacco were higher than those in Zimbabwe tobacco,while the contents of pyridine,pyrrole and ni...