不同GL/PG质量比和添加总量对加热卷烟气溶胶逐口释放特性的影响

The effect of the mass ratio and total amount of GL/PG on the puff-by-puff release characteristics of heated cigarette aerosol

为研究发烟剂配比和添加量对加热卷烟气溶胶释放特性的影响,制备了不同丙三醇(GL)/1,2-丙二醇(PG)质量比和添加总量的加热卷烟样品,通过吸烟机逐口抽吸并捕集气溶胶,检测并分析了不同加热卷烟样品气溶胶捕集物、PG、GL和烟碱的逐口释放规律。结果表明:1)固定GL/PG添加总量为20%(质量分数),随着GL/PG质量比从95/5降至50/50,PG的逐口释放量增加、总释放量的增加趋势越明显,GL的逐口释放量减少、总释放量的降低趋势越明显,烟碱的逐口释放量减少、总释放量线性减少,发烟剂GL/PG质量比与气溶胶中GL/PG质量比基本呈线性相关。2)固定GL/PG质量比为80/20,随着发烟剂添加总量从0%增至25%,PG和GL的释放量增加、逐口释放稳定性降低;添加总量>10%时,气溶胶逐口捕集量明显增加,但烟碱的释放量变化不大;GL/PG添加总量对气溶胶中GL/PG质量比影响不显著。

In order to study the influence of ratio and amount of smoke producing agent on the release characteristics of the heated cigarette smoke aerosol,a series of heated cigarettes with different mass ratio and amount of glycerol(GL)/1,2-propylene glycol(PG)were prepared.The cigarette was sucked by the smoking machine and the aerosol was collected puff-by-puff,then the release of aerosol collected mass,PG,GL and nicotine in different heated cigarette samples were detected and analyzed.The results showed that when the total amount of GL/PG was 20%(mass fraction),with the GL/PG mass ratio decreasing from 95/5 to 50/50,the puff-by-puff release quantity of PG increased and the increase trend of total PG release quantity was more obvious,the puff-by-puff release quantity of GL decreased and the decrease trend of total GL release quantity was more obvious,and the puff-by-puff release quantity of nicotine decreased and the total release decreased linearly.The GL/PG mass ratio of smoke producing agent was basically linearly correlated with the GL/PG mass ratio in aerosol.When the mass ratio of GL/PG was fixed at 80/20,with the total addition amount increased from 0%to 25%,the release quantity of PG and GL increased,and the stability of puff-by-puff release decreased;when the total addition amount was more than 10%,the puff-by-puff quantity of aerosol collected mass increased significantly,and the release quantity of nicotine changed slightly.The total addition amount of GL/PG in heated cigarette had no significant effect on the GL/PG mass ratio in aerosol.