ISO和HCI抽吸模式下卷烟燃烧状态与主流烟气成分对比分析

Comparative analysis of combustion state and mainstream smoke components of cigarettes under ISO and HCI smoking regimes

为了解卷烟在不同抽吸模式下的燃烧状态与烟气释放情况,采用微细热电偶法测量了卷烟在ISO标准抽吸模式和加拿大深度抽吸模式(HCI)下连续抽吸两口的温度分布数据,以表征卷烟的燃烧状态,同时分析了主流烟气中焦油、烟碱等化学成分的释放量。结果表明:①HCI抽吸模式下,卷烟的燃烧锥体积(V_(0))、最高温度(T_(max))、特征温度(T_(0.5))、温度范围(T_(0.1)~T_(0.9))及燃烧速率相对较大;两种抽吸模式下,抽吸第二口时燃烧锥的体积和最高温度均高于第一口,高温区域所占比例则低于第一口。②两种抽吸模式下,燃烧锥内部区域温度均先增大后减小,表面温度则先减小后增大;HCI抽吸模式下,卷烟燃烧锥内部温度和升温速率整体高于ISO模式,表面温度则低于ISO模式。③HCI抽吸模式下,卷烟主流烟气的化学成分释放量高于ISO模式,单位质量烟丝释放量是ISO模式下的1.396~3.041倍(邻甲酚除外)。该研究结果可为了解卷烟燃烧过程和机制、优化卷烟设计提供参考。

In order to study the combustion state and smoke delivery of cigarettes under ISO and Health Canada Intensive(HCI)smoking regimes,micro thermocouples were used to measure the temperature distribution data of combustion cone during successive puffs under the two regimes for characterizing the combustion state of cigarettes.Meantime,the deliveries of tar,nicotine and other chemical components in mainstream cigarette smoke were analyzed.The results showed that:1)Under HCI regime,the volume of combustion cone(V_(0)),maximum temperature(T_(max)),characteristic temperature(T_(0.5)),temperature range(T_(0.1)-T_(0.9)),and combustion rate were relatively larger.Under the two regimes,the volume of combustion cone and maximum temperature during the second puff were higher,however the proportion of high temperature area was lower than those of the first puff.2)Under the two regimes,the temperature inside the combustion cone raised first and then lowered,while the surface temperature of combustion cone was on the contrary.The temperature inside the combustion cone and the rate of temperature elevation were higher and the surface temperature was lower under HCI regime.3)The smoke deliveries were higher under HCI regime,their deliveries per unit mass of tobacco were 1.396-3.041 times as those under ISO regime(except o-cresol).The results of this study are helpful for understanding the combustion process and mechanism of cigarettes and provide references for the optimization of cigarette design.