温度对加热卷烟酸性成分释放的影响

为考察温度对加热卷烟酸性成分释放的影响，分析了在不同加热温度下3种加热卷烟烟气中酸性成分释放的种类及释放量差异，并与传统卷烟进行了对比。结果表明:①加热卷烟主流烟气中酸性成分的释放量和种类均低于传统卷烟，不同加热卷烟酸性成分的释放量也存在明显差异。②甲酸、乙酸、乳酸在加热卷烟主流烟气酸性成分中所占比例较大，当加热温度为200~300 ℃时，其释放量和迁移量快速增加，在300 ℃之后增幅减缓。在200~350 ℃时，棕榈酸释放量和迁移量快速增加，在350 ℃之后增幅减缓。③加热卷烟游离态有机酸的迁移率与其沸点相关，沸点越高，迁移率越低。 

Effects of heating temperature on releases of acidic aerosol components from heated tobacco products

In order to investigate the effects of temperature on the aerosol releases of acidic components from heated tobacco products, the types and amounts of acidic components released in the aerosol of three different heated tobacco products at different heating temperatures were analyzed and compared with those of conventional cigarettes. The results showed that: 1) The releases and types of acidic components in mainstream aerosol of the heated tobacco products were lower than those of cigarette smoke, and the releases of acidic components from the different heated tobacco products were significantly different as well. 2) Formic acid, acetic acid and lactic acid accounted for a relatively large proportion of the acidic components in mainstream aerosol of heated tobacco products, their release and migration amounts increased rapidly at the heating temperature of 200-300 ℃, while the increase rates slowed down when the temperature was above 300 ℃. The release and migration amounts of palmitic acid raised sharply at the heating temperature of 200-350 ℃, while the increase rates decelerated when the temperature was higher than 350 ℃. 3) The migration rates of free organic acids in the heated tobacco products correlated to the boiling points of the acids; the higher the boiling points were, the lower the migration amounts of free organic acids would be.