TG and Py-GC/MS Studies on Pyrolysis Characteristics of Different Cut-Tobacco
Pyrolysis characteristics on three cut-tobacco of Lanzhou,Houwang and Zhonghua cigarettes were analyzed by TG and Py-GC/MS.The cigarette tar in cigarettes were collected and analyzed by commercial cigarette holder filter and GC/MS.The results showed that the changes of thermogravimetric curves of the three brands of cut-tobacco under the same atmosphere were basically similar,the thermogravimetric curves mainly occurred in the second(120 ℃～360 ℃)and third stages(360 ℃～600 ℃).As compared with N2 atmosphere,the thermal decomposition rate and total weight loss of cut-tobacco in O2 atmosphere increased significantly,especially promoted the pyrolysis of the third stage.The contents of nicotine in the cut-tobacco pyrolysis volatile of Lanzhou,Houwang and Zhonghua tobacco were the highest,reaching 8.35％,6.53％and 6.24％respectively.The order of the tar contents of the three brands of cigarettes was Zhonghua＞Lanzhou＞Houwang.There were obvious differences in the tar composition of three cigarettes.The highest content of the tar of Lanzhou and Zhonghua tobacco was nicotine,while the highest content of the tar of Houwang tobacco was alcohol compounds.
NETL
NSTL
万方数据
