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Determination of major aroma components in mainstream cigarette smoke using cold trap followed by GC×GC-TOFMS

XIANG Zhangmin  CAI Kai  GENG Zhaoliang  PAN Wenjie  ZHOU Shuping  
【摘要】:A qualitative and quantitative analytical methodwas developed and applied to the analysis of major aroma components present in mainstream tobacco smoke. The smoke samples were cold trapped using liquid nitrogen and then analysed by comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry(GC×GC-TOFMS). Important experimental parameters, such as the type, volume of the extraction solvent, and flow rate of smoking were optimised to improve the analysis outcome. The results indicated that 180 mL of diethyl ether in the cold trap with a 4.0 mL ·min~(-1) smoke flow rate were the optimal condition. Using this experimental setup, a total of 112 aroma components were identified and quantified using a mass spectral library search. In addition, a comparison of the cold trap method was made to that obtained using Cambridge filter pad method, this indicated that more peak were present in the sample. A higher peak number and better repeatability were obtained using the cold trap method. Finally, the developed analytical method was applied to the classification of different cigarette styles and useful results were achieved.

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