JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 41 Issue 4
August 2026
Article Contents
HU Anfu, JIN Yixiao, SUN Tong, et al. Effects of the number of ventilation holes on the puff-by-puff particle size and chemical component release of heated tobacco product aerosol[J]. Journal of Light Industry, 2026, 41(4): 66-74. doi: 10.12187/2026.04.006
Citation: HU Anfu, JIN Yixiao, SUN Tong, et al. Effects of the number of ventilation holes on the puff-by-puff particle size and chemical component release of heated tobacco product aerosol[J]. Journal of Light Industry, 2026, 41(4): 66-74. doi: 10.12187/2026.04.006 shu

Effects of the number of ventilation holes on the puff-by-puff particle size and chemical component release of heated tobacco product aerosol

  • Corresponding author: JIANG Jian, kaigewang@zju.edu.cn
  • Received Date: 2024-12-17
    Accepted Date: 2025-01-07
  • 【Objective】 To clarify the effect of the number of ventilation holes on the physical parameters and chemical component release of puff-by-puff aerosol from heated tobacco products (HTPs).【Methods】 Circumferentially heated cigarettes were used as the test samples. The ventilation rate was varied by adjusting the number of ventilation holes, with three conditions of 30, 40, and 50 holes. A scanning mobility particle sizer (SMPS) and gas chromatography-mass spectrometry (GC-MS) were employed to determine the puff-by-puff aerosol particle size distribution, D50, number concentration, and the contents of volatile organic compounds (VOCs), glycerol, and nicotine.【Results】 Under different numbers of ventilation holes, all puff-by-puff aerosol particle size distributions exhibited a bimodal pattern. As the hole number increased, the particle size peak, D50, and aerosol number concentration all showed a trend of first decreasing and then increasing. The highest total aerosol number concentration was observed at 50 holes, while the puff-by-puff release stability was better at 40 holes. The puff-by-puff variation in VOC components was weakly correlated with aerosol number concentration, and the relative content of organic components decreased as the hole number increased. The nicotine content was positively correlated with the aerosol number concentration to some extent, whereas the glycerol content showed a weaker correlation with number concentration but exhibited an overall trend of first increasing and then decreasing with increasing hole number.【Conclusion】 The number of ventilation holes significantly influences the puff-by-puff particle size distribution, number concentration, and chemical component release of HTP aerosols, and a nonlinear relationship exists between hole number and these aerosol release characteristics.
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