Have a personal or library account? Click to login
Aerosol Formation and Transfer in Open- and Closed-Ended Heated Tobacco Products Cover

Aerosol Formation and Transfer in Open- and Closed-Ended Heated Tobacco Products

Contributions to Tobacco & Nicotine Research
Volume 31 (2022): Issue 3 (November 2022)
By: Bin Li,  Yue Sun,  Lili Fu,  Lulu Feng,  Ping Lei,  Chuan Liu,  Jingmei Han,  Shanzhai Shang,  Shuang Wang,  Le Wang,  Yonghua Pan,  Qi Zhang,  Zhongya Guo,  Feng Huang,  Mingjian Zhang,  Jianguo Tang,  Bing Wang and  Ke Zhang  
Open Access
|Dec 2022

Figures & Tables

Figure 1

Schematic diagram of the tobacco rod structure for HNB and NSC: the NSC structure is shown with the ventilation holes. HNB is identical but without the ventilation holes.
Schematic diagram of the tobacco rod structure for HNB and NSC: the NSC structure is shown with the ventilation holes. HNB is identical but without the ventilation holes.

Figure 2

Airflow pathways of HNB (A) and NSC (B) systems.
Airflow pathways of HNB (A) and NSC (B) systems.

Figure 3

Photos of HNB (A) and NSC (B) systems.
Photos of HNB (A) and NSC (B) systems.

Figure 4

The locations and method for detecting temperature profiles inside the heated tobacco products.1: Heating device; 2: Temperature detection point of tobacco plug; 3: Tobacco rod; 4: Temperature detection point of hollow acetate tube; 5: Thermocouple; 6: Thermocouple compensation wire; 7: Data collector; 8: Data acquisition software; 9: Data connection cable; 10: Single-channel smoking machine.
The locations and method for detecting temperature profiles inside the heated tobacco products.1: Heating device; 2: Temperature detection point of tobacco plug; 3: Tobacco rod; 4: Temperature detection point of hollow acetate tube; 5: Thermocouple; 6: Thermocouple compensation wire; 7: Data collector; 8: Data acquisition software; 9: Data connection cable; 10: Single-channel smoking machine.

Figure 5

Mainstream aerosol collected mass (ACM) as a function of puff number under the two airflow pathways.
Mainstream aerosol collected mass (ACM) as a function of puff number under the two airflow pathways.

Figure 6

The deliveries of nicotine (A), PG (B), VG (C) and H2O (D) in mainstream aerosol on a puff-by-puff basis for the two different airflow pathways.
The deliveries of nicotine (A), PG (B), VG (C) and H2O (D) in mainstream aerosol on a puff-by-puff basis for the two different airflow pathways.

Figure 7

Proportions of nicotine, PG, VG and H2O in the aerosol collected mass (ACM) as a function of puff number for the two airflow pathways: HNB (A) and NSC (B).
Proportions of nicotine, PG, VG and H2O in the aerosol collected mass (ACM) as a function of puff number for the two airflow pathways: HNB (A) and NSC (B).

Figure 8

Variation of temperature at the center of tobacco rod (A) and inside the filter rod (B) during puffing for the HNB and NSC systems.
Variation of temperature at the center of tobacco rod (A) and inside the filter rod (B) during puffing for the HNB and NSC systems.

Figure 9

Aerosol particle number concentration (APNC) and count median diameter (CMD) of mainstream aerosols for HNB and NSC systems.
Aerosol particle number concentration (APNC) and count median diameter (CMD) of mainstream aerosols for HNB and NSC systems.

Figure 10

Surface temperature (a) and the radial flow velocity responses (b) at 1-s into a 2-s puff of a burning cigarette cone. Temperature map (c) and axial air flow velocity map (d) at the cross section are also plotted. For full details, please refer to reference 16.
Surface temperature (a) and the radial flow velocity responses (b) at 1-s into a 2-s puff of a burning cigarette cone. Temperature map (c) and axial air flow velocity map (d) at the cross section are also plotted. For full details, please refer to reference 16.

Transfer ratio of main components in the tobacco substrate, filter rods, and mainstream aerosol under the HNB and NSC system_

SpecimensPGVGNicotineH2O PGVGNicotineH2O
mg/cig%
TobaccoHNB0.16 ± 0.140.000.03 ± 0.043.92 ± 0.61ηresidual3.300.000.6711.13
NSC0.24 ± 0.000.000.08 ± 0.002.28 ± 0.574.990.002.086.46
Filter rodHNB2.33 ± 0.159.77 ± 0.791.26 ± 0.108.53 ± 0.94ηtrapping48.9370.9133.1124.22
NSC2.59 ± 0.084.97 ± 0.251.07 ± 0.059.28 ± 0.2654.3936.0928.0926.35
AerosolHNB1.65 ± 0.092.35 ± 0.170.87 ± 0.0410.28 ± 0.26ηcapture34.5117.0822.9529.17
NSC1.69 ± 0.056.15 ± 0.351.22 ± 0.0610.63 ± 0.5335.4044.6232.1030.16

The main blend components of the tobacco plug on each rod_

ComponentsNicotinePropylene glycolGlycerolH2OTobacco plug
Weight (mg/plug)3.79 ± 0.224.77 ± 0.1213.79 ± 0.2535.23 ± 1.75179.40 ± 3.73

Working parameters of the two heating devices_

Airflow pathwayHeating modeHeating temperaturePreheating timeWorking time
HNBPeripheral resistive heating240 °C45 s4 min 12 s
NSCPeripheral resistive heating240 °C45 s4 min 12 s

Aldehydes and ketones in mainstream aerosol of HNB and NSC systems_

SpecimensACMPGVGNicotineH2OOther components a
(mg/stick)
HNB15.48 ± 1.301.65 ± 0.092.35 ± 0.170.87 ± 0.0410.28 ± 0.260.33 ± 0.03
NSC23.18 ± 1.351.69 ± 0.056.15 ± 0.351.22 ± 0.0610.63 ± 0.533.49 ± 0.29
NSC / HNB150%102%262%140%103%1058%

Total releases of main components in the mainstream aerosol_

SpecimensACMPGVGNicotineH2OOther components a
(mg/stick)
HNB15.48 ± 1.301.65 ± 0.092.35 ± 0.170.87 ± 0.0410.28 ± 0.260.33 ± 0.03
NSC23.18 ± 1.351.69 ± 0.056.15 ± 0.351.22 ± 0.0610.63 ± 0.533.49 ± 0.29
NSC / HNB150%102%262%140%103%1058%
DOI: https://doi.org/10.2478/cttr-2022-0017 | Journal eISSN: 2719-9509
Journal RSS Feed
Language: English
Page range: 162 - 174
Submitted on: Jan 17, 2022
Accepted on: Jun 30, 2022
Published on: Dec 10, 2022
Published by: Institut für Tabakforschung GmbH
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Related subjects:
General interest,
Life sciences,
Life sciences, other,
Physics,
Physics, other

© 2022 Bin Li, Yue Sun, Lili Fu, Lulu Feng, Ping Lei, Chuan Liu, Jingmei Han, Shanzhai Shang, Shuang Wang, Le Wang, Yonghua Pan, Qi Zhang, Zhongya Guo, Feng Huang, Mingjian Zhang, Jianguo Tang, Bing Wang, Ke Zhang, published by Institut für Tabakforschung GmbH
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License.

Previous articleVolume 31 (2022): Issue 3 (November 2022)Next article