真空紫外光电离质谱在线检测卷烟主流烟气气溶胶中气体和颗粒物的化学成分  

On-line Analysis of Chemical Components of Gas-phase and Particulate-phase in Cigarette Mainstream Smoke by Vacuum Ultraviolet Photoionization Mass Spectrometry

作　　者：赵锋 温作赢 顾学军[2] 王健[1] 唐小锋 张为俊[2] ZHAO Feng;WEN Zuo-ying;GU Xue-jun;WANG Jian;TANG Xiao-feng;ZHANG Wei-jun(Key Laboratory of Combustion and Pyrolysis,China Tobacco Anhui Industrial Co,Ltd,Hefei 230088,China;Anhui Institute of Optics&Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230026,China)

机构地区：[1]安徽中烟工业有限责任公司,烟草化学安徽省重点实验室,安徽合肥230088 [2]中国科学院合肥物质科学研究院,安徽光学精密机械研究所,安徽合肥230026

出　　处：《质谱学报》2023年第6期770-779,I0002,共11页Journal of Chinese Mass Spectrometry Society

基　　金：国家自然科学基金项目(42005091);安徽中烟工业有限责任公司科技项目(2021304)。

摘　　要：本文采用吸烟机模拟吸烟状态,结合自制的真空紫外光电离质谱仪,在线检测和表征卷烟主流烟气中气体和颗粒物的化学成分,获得各自的特征成分,并开展逐口抽吸特性研究。结果表明,卷烟主流烟气中的气体成分主要为小分子质量的挥发性有机物,而颗粒物的成分复杂,在质谱仪质量分析范围(m/z<400)内均有检出。烟气两相成分的归属结果显示,部分成分主要以气体形式存在于烟气中,而另一些成分仅存在于颗粒物中。此外,研究发现,苯酚、糠醛、二羟基苯、二甲基苯酚、愈创木酚和柠檬烯等成分在气相和颗粒相中均有检出。逐口分析中,气体成分呈现2种变化特征,绝大多数成分的信号强度随抽吸口数增加而增强,而部分不饱和烃则在第2口抽吸中具有较高的相对强度,之后逐渐降低并趋于稳定或略有上升;几乎颗粒相中所有成分都呈现逐口增强的趋势,与气相成分相比,颗粒相成分的增长趋势更平缓。Cigarette mainstream smoke is a complex aerosol system that consists of gas-phase and particulate-phase components.The chemical compositions of both phases continuously change with time and temperature,and can significantly impact human health in various ways.Many components in both phases are toxic or carcinogenic,and they are dynamically partitioned between the two phases.Current research on the chemical composition of cigarette smoke aerosols mainly focuses on off-line detection,particularly the particulate-phase,which presents a significant challenge for on-line detection.In order to accurately characterize the chemical composition of the two phases,a homemade vacuum ultraviolet photoionization mass spectrometer was utilized to analyze cigarette mainstream smoke.The high time resolution of the instrument was allowed for thorough investigation of the puff-by-puff characteristics of cigarette smoke.By combining a capillary interface and an aerodynamic lens to sampling,the instrument precisely analyzed the components of gas-phase and particulate-phase,respectively.The experimental results demonstrated that the gas-phase and particulate-phases of cigarette mainstream smoke have their own unique and distinctive mass spectra.The gas-phase components mainly consisted of small molecular volatile organic compounds with mass numbers in the range of m/z<150,while the particulate-phase components were more intricate and could cover the entire mass range detected by the mass spectrometer(m/z<400).Some components primarily presented in the gas phase,some existed solely in the particulate phase,while others could be found in both phases.The puff-by-puff analysis of the gas phase showed two variations,the signal intensity of most components tended to increase with the puff number.However,some unsaturated hydrocarbons exhibited higher relative intensity in the second puff,after which it gradually decreased and eventually stabilized or slightly increased.Almost all the components in the particulate-phase showed an increasing p

关 键 词：卷烟主流烟气 气溶胶 颗粒物 在线成分分析 真空紫外光电离质谱 

分 类 号：O657.63[理学—分析化学]