卷烟主流烟气中挥发和半挥发性成分分析

Analysis of Volatile and Semi-volatile Components in Mainstream Cigarette Smoke

为分析卷烟主流烟气气相和粒相中挥发性、半挥发性成分,考察了XAD-2吸附管和0.01%三乙胺/甲醇冷溶液串联捕集气相成分的效率,以及甲醇、二氯甲烷、环己烷、己烷和乙酸乙酯对XAD-2吸附管和剑桥滤片捕集成分的萃取效率,并采用气相色谱-质谱法测定了3R4F、lR5F参考卷烟和国产烤烟型参比卷烟样品主流烟气气相与粒相中挥发性、半挥发性成分。结果表明:①采用XAD-2吸附管和10mL0.01%三乙胺/甲醇冷溶液(温度≤-80℃)基本上可较完全地捕集卷烟主流烟气气相和粒相中的挥发性和半挥发性成分;②0.01%三乙胺/甲醇溶液适合这些成分的萃取;③这3种卷烟样品主流烟气气相和粒相中共鉴定出50种成分,其中,芳香类19种、酮类14种、吡啶类4种、呋喃类6种,其它类7种;④沸点>250℃和<80℃的成分分别在气相和粒相中未检出;⑤3种参考卷烟的主流烟气中挥发性、半挥发性成分的气相/粒相分配比趋势相近。同一类和沸点相近的不同种类挥发性、半挥发性成分的气相/粒相分配比分别随着其沸点和其极性的升高而减小。

To analyze the volatile and semi-volatile components in vapor and particulate phases of mainstream cigarette smoke （ MS）, the efficiencies of trapping vapor phase components by tandem XAD-2 adsorption tube and 0.01% triethylamine/methanol cool solution and the extraction efficiencies of methanol, dichloromethane,cyclohexane, hexane and ethyl acetate for components trapped by the tandem XAD-2 adsorption tube and Cambridge filter were investigated. The volatile and semi-volatile components in vapor and particulate phases of MS produced by reference cigarettes 3R4F, IR5F and a domestic reference Virginia type cigarette were determined by gas chromatography/mass spectrometry. The results indicated that： 1 ） the volatile and semi-volatile components in vapor and particulate phases of MS were basically completely trapped by combination of XAD-2 tube and 10 mL 0. 01% triethylamine/methanol cool solution （temperature≤-80℃） ; 2） 0.01% triethylamine/methanol solution was suitable for the extraction of these components; 3）50 components were identified, including 19 aromatic compounds, 14 ketones, 4 pyridines, 6 furans and 7 other compounds; 4） the components whose boiling points were over 250℃ or below 80℃ were not detec-table in vapor and particulate phases; 5） there were a similar tendency in distribution ratios of volatile and semi-volatile components in vapor phase to particulate phase of MS of 3 reference cigarettes, and thedistribution ratios of the same kind of volatile and semi-volatile components and of the different kind of components with similar boiling points in MS decreased with the increase of their boiling points and theirpolarities, respectively.