Integration of Time and Spatially Resolved In-Situ Temperature and Pressure Measurements With Soft Ionisation Mass Spectrometry Inside Burning Superslim and King-Size Cigarettes Cover

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Integration of Time and Spatially Resolved In-Situ Temperature and Pressure Measurements With Soft Ionisation Mass Spectrometry Inside Burning Superslim and King-Size Cigarettes

Contributions to Tobacco & Nicotine Research

Volume 29 (2020): Issue 1 (April 2020)

By: Nan Deng, Sven Ehlert, Huapeng Cui, Fuwei Xie, Jan Heide, Bin Li, Chuan Liu, Kevin McAdam, Andreas Walte and Ralf Zimmermann

Open Access

|May 2020

Figures & Tables

Experimental set-up. (a) Schematic of the thermocouple array and the chemical sampling microprobe positioned on the opposite of a test cigarette. (b) Image of the experimental set-up. (c) The laser beam for SPI-TOFMS used in the chemical sampling. (d) Image of the thermocouple and pressure sensor arrays (arrow indicates the 5th sensor marking the zero position – see text).

Temperature distribution maps for superslim and king-size cigarettes smoked under ISO and HCI conditions. The puff was initiated at 0 s and lasted for 2 s. The direction of burn is from right to left. (Note that the vertical axis is enlarged for the superlim relative to the king-size cigarette: −2.7 to +2.7 mm (superslim) versus −4.0 to +4.0 mm (king-size).)

Pressure distribution for superslim and king-size cigarettes smoked under ISO and HCI conditions. The puff was initiated at 0 s and lasted for 2 s. The direction of burn is from right to left.

Concentration maps of benzene and nitric oxide formation in a superslim cigarette smoked under ISO and HCI conditions. The puff was initiated at 0 s and lasted for 2 s. The direction of burn is from right to left.

Concentration maps of benzene and nitric oxide formation in a king-size cigarette smoked under ISO and HCI conditions. The puff was initiated at 0 s and lasted for 2 s. The direction of burn is from right to left.

Influence of cigarette diameter on nicotine degradation chemistry. Shown are concentration maps of nicotine, indole and ammonia under HCI puffing conditions. The starting puff was initiated at 0 s and lasted for 2 s; however, concentration maps up to 5.0 s are shown to illustrate the evolution of the three species. The direction of burn is from right to left.

Physical parameters and mainstream smoke yields of the superslim and king-size cigarettes_

Parameter	Superslim cigarette		King-size cigarette
Circumference (mm)	17		24
Weight (g)	0.546 ± 0.005		0.925 ± 0.005
Cigarette paper air permeability (CU)	56.3		56.9
Cigarette paper weight (g/m²)	30.0		29.7
Burn additive content (mg/g)	12.5		13.4
Cigarette total length (mm)	97		84
Filter length (mm)	30		27
Tipping paper length (mm)	36		38
Open unlit draw resistance (Pa)	1240		1005
Total tobacco rod ventilation (%)	60.0		20.8
Filter ventilation (%)	51.9		15.8
Tobacco cutting width (mm)	0.8		0.8
	ISO	HCI	ISO	HCI
NFDPM (mg/cig)	5.78	17.18	9.49	22.2
Nicotine (mg/cig)	0.48	1.49	0.86	2.0
CO (mg/cig)	4.23	12.82	10.3	21.4

Macro-characteristic parameters of the burning tips of the two cigarettes puffed under ISO and HCI regimes_

Parameter	Superslim		King-size

	ISO	HCI	ISO	HCI
T_0.5 (°C)	474 ± 9	545 ± 6	455 ± 13	451 ± 13
V₀ (cm³)	226 ± 10	307 ± 5	489 ± 10	490 ± 6
T_max (°C)	814 ± 20	818 ± 22	776 ± 16	796 ± 6
Average puff burn rate (mm/s)	0.75 ± 0.06	1.23 ± 0.07	0.59 ± 0.06	0.83 ± 0.05
Maximum puff burn rate (mm/s)	1.29 ± 0.12	2.41 ± 0.29	0.96 ± 0.10	1.54 ± 0.20
Average smoldering rate (mm/s)	0.10		0.08

DOI: https://doi.org/10.2478/cttr-2020-0005 | Journal eISSN: 2719-9509

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Language: English

Page range: 44 - 54

Submitted on: Dec 11, 2019

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Accepted on: Apr 30, 2020

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Published on: May 23, 2020

Published by: Institut für Tabakforschung GmbH

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

Cigarette circumference,

combustion and pyrolysis,

microprobe analysis,

on-line photo-ionization mass spectrometry

Related subjects:

General interest,

Life sciences, other,

© 2020 Nan Deng, Sven Ehlert, Huapeng Cui, Fuwei Xie, Jan Heide, Bin Li, Chuan Liu, Kevin McAdam, Andreas Walte, Ralf Zimmermann, published by Institut für Tabakforschung GmbH
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License.

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