| 闭路循环动态针捕集/气相色谱-质谱法测定卷烟烟丝挥发性成分 |
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| 中文摘要:建立了闭路循环动态针捕集/气相色谱-质谱测定卷烟烟丝中挥发性化学成分的方法，优化了采集模式、捕集与解吸条件,考察了动态针捕集（NT）的解吸率，并与固相微萃取方法进行了对比。结果表明，填充Carboxen1000的捕集针，在样品加热温度为80 ℃，以3 mL/min流速浸入式闭路循环捕集30 min，并在250 ℃下解吸5 min为最佳条件；在卷烟烟丝中共检出有机酸、酯、醛、醇类等45种化合物，其中相对标准偏差（RSD）小于5%的有27种，占化合物数量的60%。NT捕集方式的灵敏度、重复性均优于固相微萃取，更适用于卷烟烟丝中挥发性成分分析。 |
| 中文关键词:动态针捕集（NT） 固相微萃取（SPME） 气相色谱-质谱联用（GC-MS） 烟草制品 |
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| Analysis of Volatile Components in Cigarettes by Gas Chromatography-Mass Spectrometry with Dynamic Needle Trap |
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| Abstract:A closed loop dynamic needle sampling method was developed for the determination of volatile components in cigarette tobacco by gas chromatography-mass spectrometry（GC-MS）.The collection mode,trapping and desorption conditions were optimized,and the desorption rate of dynamic needle trap（NT） was investigated,which was compared with that of solid phase microextraction（SPME）.The optimal conditions were as follows:a needle filled with Carboxen1000 material was used to trap the sample at a heating temperature of 80 ℃,with a velocity of 3 mL/min,a capturing time of 30 min,a desorption temperature of 250 ℃ and a desorption time of 5 min.Under the optimized conditions,45 compounds including tobacco organic acids,esters,aldehydes,alcohols etc.were detected,among which 27 species,accounting for 60% of total compounds,had the relative standard deviations less than 5%.The NT method,with better sensitivity and repeatability,is more suitable than solid phase microextraction method for the analysis of volatile components in cigarette tobacco. |
| Key Words:dynamic needle trap（NT） solid phase microextraction（SPME） gas chromatography-mass spectrometry（GC-MS） tobacco products |
| 引用本文：李远根，吴穹曼，寇天舒，赵彬，张艳芳，何爱民，苏国岁.闭路循环动态针捕集/气相色谱-质谱法测定卷烟烟丝挥发性成分[J].分析测试学报,2018,37(6):708-713. |
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