Radial distributions of nicotine and atomizing agents in tobacco section of a needle-style centrally heated tobacco product after smoking

To investigate the radial distributions of nicotine and atomizing agents in tobacco section of a needle-style centrally heated tobacco product during smoking, the tobacco section was radially stratified before and after smoking by a bespoke tobacco section stratifying device. The concentration distribution, release efficiency and puff-by-puff release of 1, 2-propanediol, glycerol and nicotine in each tobacco circle were studied. The linear equation between the contents(mass fractions)of the compounds and the radial distance of tobacco circles was established. The results showed that: 1)The contents of nicotine and the atomizing agents in tobacco section increased from inner to outer after smoking. 2)The release efficiency of nicotine and the atomizing agents in the tobacco followed the order of 1, 2-propanediol > nicotine > glycerol, which obviously correlated to their boiling points. 3)The main release source of 1, 2-propylene glycol was the middle and outer tobacco circles, and those of glycerol and nicotine was the inner tobacco circle. 4)After smoking, the radial distributions of nicotine and the atomizing agents in the tobacco section significantly correlated to the radial distances and their boiling points. Glycerol was affected by the radial distance most significantly. 5)Appropriately reducing the diameter of tobacco section could reduce the amount of cut tobacco in each tobacco rod, while the smoke concentration and physiological satisfaction were basically unchanged.