Effects of filter ventilation rate on releases of main aerosol components from heated tobacco products.

To study the effects of filter ventilation rate on the releases of main aerosol components from heated tobacco products, heated tobacco stick samples with different filter ventilation rates and perforation locations were prepared, and the aerosol collected masses of nicotine, moisture, glycerol and their retention amounts in the filter were determined. The results showed that: 1) With increasing filter ventilation rate, the aerosol collected masses of nicotine and moisture initially decreased, then increased and peaked at the filter ventilation rate of 70%-75% before decreasing again. The aerosol collected mass of glycerol increased and peaked at the filter ventilation rate of 70% and then decreased. 2) With increasing filter ventilation rate, the amount of nicotine retained in the filter showed a decreasing-increasing-decreasing trend, that of moisture first decreased and then increased, and that of glycerol first decreased and then remained stable. The amounts of nicotine, moisture and glycerol retained in the filter were the lowest at the filter ventilation rate of 70%, and the amount of glycerol retained in the filter was much higher than its aerosol collected mass. 3) When the airflow volume through the tobacco section was about 11 mL (the filter ventilation rate of 80%), the collected masses of main components per unit airflow volume were higher. When the airflow volume through the tobacco section was about 16.5 mL (the filter ventilation rate of 70%), the retained amounts of main components per unit airflow volume were lower. 4) A longer distance between the perforation locations and the mouth end was conducive to increasing the aerosol collected masses of the main components and reducing the retention amounts of main components in the filter. 5) Filter ventilation rate and perforation location significantly affected the aerosol collected masses of the main components with a significant interaction between them, and the influence degrees of filter ventilation rate were greater than those of perforation location. [ABSTRACT FROM AUTHOR]