【摘要】 采用密闭实验箱开展香烟、电子烟的自由燃烧实验，利用Tenax吸附管采集箱内烟气中挥发性有机物(VOCs)样品，采用热解吸—气相色谱/质谱方法测定108种VOCs化合物，定量研究香烟、电子烟自由燃烧烟雾中VOCs的浓度、种类、特征物及排放率，结果表明：(1)香烟自由燃烧烟雾108种VOCs中臭氧前体物(PAMs)、空气毒物分别为38 799.04、14 658.15μg/m~3,电子烟则分别为160.19、2 650.23μg/m~3。(2)香烟与电子烟自由燃烧烟雾中VOCs的种类和浓度的差异主要归因于香烟与电子烟的成分、吸气行为和蒸发条件差异。(3)香烟自由燃烧烟雾中VOCs浓度最高的物质是异戊二烯(9 200.41μg/m~3)、丙烯(8 269.47μg/m~3),电子烟则是乙醇(2 502.88μg/m~3)。香烟、电子烟自由燃烧过程中VOCs排放率分别为2 969.80、312.06μg/支。更多还原

【Abstract】 The free combustion experiments of cigarettes and e-cigarettes were carried out in a closed chamber. The samples of VOCs in the air were collected by Tenax adsorption tube, and 108 kinds of VOCs were determined by TD-GC/MS. The concentrations, species, characteristic substances and emission rates of VOCs in free burning smoke of cigarettes and e-cigarettes were quantitatively studied. Results showed that:(1) the emission concentrations of PAMs and air toxics were 38 799.04,14 658.15 μg/m~3 among the 108 VOCs in cigarette free burning smoke, those in e-cigarette were 160.19,2 650.23 μg/m~3 respectively.(2) The differences in the types and concentrations of VOCs between cigarette smoke and e-cigarette smoke were mainly due to the differences in composition, inspiratory behavior and evaporation condition.(3) Isoprene(9 200.41 μg/m~3) and propylene(8 269.47 μg/m~3) were the characteristic substances of VOCs from free burning of cigarettes, and ethanol(2 502.88 μg/m~3) was the characteristic substance of VOCs from free burning of e-cigarettes. The emission rates of VOCs from free burning of cigarettes and e-cigarettes were 2 969.80,312.06 μg/cigarette.更多还原