A Model Study on the Diffusion and the Dilution of Low Molecular Weight Gaseous Components through Cigarette Paper during Smoking

Open access

Abstract

The effects of diffusion and dilution on the concentration of gaseous components have been studied by a model consisting of unlit cigarettes differing in paper porosity and length, and a standard gas mixture. Results are as follows: The difference in the concentration of gaseous components between the front and butt end of the cigarette during the puff increases with cigarette length and paper porosity, and also depends on the diffusion coefficient of respective components through the cigarette paper. These changes could be explained mainly by the diffusion loss through the paper in the case of the cigarette with ordinary paper, but by both dilution with air through the paper and diffusion loss in the case of the cigarette with perforated paper. Subsequently, the levels of gaseous components such as carbon monoxide in the exit stream become lower in the Iatter cigarette. In addition, the following equation, which can fully account for these changes, has been derived:

where C1i and C0i are the concentrations of the component i at the front and butt end, respectively, L the cigarette length, r the cigarette radius, s the thickness of paper, U0 and U1 the apparent linear gas velocities at the butt and front end, respectively, and Di the diffusion coefficient of component i through the paper.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • 1. Newsome J. R. and C. H. Keith: Tobacco Sci. 9 (1965) 65.

  • 2. Owen W. C. and M. L. Reynolds: ibid. 11 (1967) H.

  • 3. Baker R. R. and K. D. Kilburn: Beitr. Tabakforscb. 7 (1973) 79.

  • 4. Mikami Y. N. Naitō and Y. Kaburaki: Scientific papers Central Research Institute Japan Monopoly Corporation No. 113 (1971) 99.

  • 5. lmazu T.: ibid. No. 113 (1971) 131 and 139.

  • 6. Norman V.: Beitr. Tabakforsch. 7 (1974) 282.

  • 7. Morie G. P.: Tobacco Sci. 20 (1976) 174.

  • 8. Satō K.: Busseijōsūsuisanhō Maruzen 1963 129.

  • 9. Kagakukōgaku-kyōkai/The Society of Chemical Engineers Japan (ed.): Busseijōsū Maruzen 1970 230.

Search
Journal information
Impact Factor


CiteScore 2018: 0.69

SCImago Journal Rank (SJR) 2018: 0.295
Source Normalized Impact per Paper (SNIP) 2018: 0.491

Metrics
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 137 87 2
PDF Downloads 70 52 1