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为研究切丝宽度对卷烟烟气气溶胶粒径分布特性的影响,采用DMS500快速粒径谱仪和电子低压撞击器(ELPI),在ISO抽吸模式下,分别研究了不同切丝宽度卷烟烟气气溶胶的粒数粒径分布和质量粒径分布特征.结果表明:①不同切丝宽度(0.7、0.9和1.1 mm)卷烟的烟气气溶胶粒子数随粒径大小均呈现出近似的对数正态分布,粒子主要分布在40～400 nm.切丝宽度为0.7 mm和0.9 mm时烟气气溶胶的粒子数浓度略高于切丝宽度为1.1 mm,随切丝宽度的增加烟气气溶胶粒数中值直径(CMD)逐渐减小.②3种切丝宽度卷烟烟气气溶胶的质量主要集中在粒径为100～1 000 nm范围内,随着切丝宽度的增加,烟气气溶胶质量中值直径(MMD)减小,气溶胶总质量降低.③随着烟丝切丝宽度增加烟气总粒相物、焦油、烟碱、水分和CO逐渐降低.④感官评吸结果表明随切丝宽度增加烟气量降低,烟气质变稍粗糙,烟气形态变短,烟气变蓬松,整体烟气感官品质略有下降.⑤综合考虑,切丝宽度为0.9 mm时,烟气粒子浓度高、粒径大小适中,烟气常规释放量较0.7 mm时低,并有较好的感官质量.“,”In order to study the effects of tobacco cut width on the particle size distribution of mainstream cigarette smoke aerosol, DMS500 fast particulate spectrometer and electrical low pressure impactor (ELPI) were used to study the particle size distribution of mainstream smoke aerosol of cigarette made of tobacco of different cut widths (0.7, 0.9 and 1.1 mm) under ISO smoking regime in terms of particle number and particle mass, respectively. The results showed that: 1) The particle number presented an approximately lognormal distribution versus particle size of aerosol, and mainly distributed in the range of 40-400 nm. The particle number per cm3 smoke of cigarette with tobacco cut width of 0.7 or 0.9 mm was slightly higher than that of 1.1 mm. With the increase of cut width, count median diameters (CMD) of aerosol decreased gradually. 2) The mass of smoke aerosol mainly distributed in the range of 100-1 000 nm. With the increase of tobacco cut width, mass median diameters (MMD) of smoke aerosol decreased, the total mass of aerosol also decreased. 3) The contents of total particulate matter, tar, nicotine, moisture and CO in cigarette smoke reduced with the increase of tobacco cut width. 4) Sensory evaluation indicated that with the increase of tobacco cut width, smoke yield decreased, harshness increased, smoke shape shortened, fluffy sense increased, and the overall sensory quality of cigarette smoke deteriorated slightly. 5) As a whole, cigarette made of tobacco with width of 0.9 mm presented higher smoke particle concentration, moderate particle size, lower routine analyte deliveries, and offered better smoking quality.