PI-TOF/MS法逐口在线分析卷烟主流烟气中7种有机物  

On-line Puff-by-puff Analysis of Seven Organic Compounds in Mainstream Cigarette Smoke by Photo-Ionization-Time-of-Flight Mass Spectrometry

作　　者：庞永强[1] 姜兴益[1] 罗彦波[1] 李雪[1] 朱风鹏[1] 陈再根[1] 

机构地区：[1]国家烟草质量监督检验中心

出　　处：《烟草科技》2015年第4期37-41,共5页Tobacco Science & Technology

基　　金：中国烟草总公司郑州烟草研究院院长基金项目"基于Tobacco Sense在线质谱仪的卷烟烟气实时在线分析研究"(502012CA0070)

摘　　要：为了考察卷烟抽吸过程中主流烟气的逐口释放特征,建立了在线分析卷烟主流烟气中乙醛、1,3-丁二烯、丙酮、异戊二烯、2-丁酮、苯和甲苯7种有机物的光致电离飞行时间质谱(PI-TOF/MS)方法。通过标准恒流孔实现卷烟烟气的定量取样,烟气经带加热装置的采样管引入PI-TOFMS离子源内进行分析。结果表明:1方法日内重复性、日间重复性良好,除第1口和最后1口由于点火过程及抽吸容量不同而导致变异较大外,其他口的RSD均小于15%;21R5F和3R4F参比卷烟的测试结果与CORESTA共同实验测试平均值的相对偏差在10%以内;3不同化合物的逐口释放量存在较大差异,逐口之间的释放规律也不一致。该方法操作简单、快速准确,适合于卷烟主流烟气的逐口在线分析研究。In order to investigate the puff-by-puff release characteristics of mainstream cigarette smoke, a photo-ionization-time-of-flight mass spectrometry（PI-TOF/MS） method was developed for on-line analyzing seven organic compounds（acetaldehyde, 1, 3-butadiene, acetone, isoprene,2-butanone, benzene and toluene） in mainstream cigarette smoke. The constant volume sampling of mainstream cigarette smoke was achieved by a constant flow orifice, the smoke was directly introduced into the ion source of PI-TOF/MS through a sampling tube with a heating unit. The results showed that： 1） The intra-day and inter-day repeatabilities were good with the relative standard deviations（RSDs） less than 15%, exclusive of the first and the last puffs, where the deviations were larger due to cigarette lighting and variable puff volume, respectively. 2） The RSDs between the results of 1R5 F and 3R4 F reference cigarettes determined by this method and the mean test values of CORESTA collaborative experiments were less than 10%. 3） The deliveries of different compounds in single puff differed obviously, as did the deliveries between different puffs. This method is simple, fast, accurate, and suitable for the on-line puff-by-puff analysis of mainstream cigarette smoke.

关 键 词：卷烟 主流烟气 在线分析 逐口释放量 光致电离飞行时间质谱(PI-TOF/MS) 

分 类 号：TS411.2[农业科学—烟草工业]