Abstract
Tobacco smoke is a condensation aerosol, produced by cooling of low temperature flameless combustion products. These are liquid at body and room temperature, therefore they are spherical in shape and tend to spread on the surface upon contact.
Their density is close to unity (1 g cm-3) since the most important component is water. Therefore the geometric diameter coincides with the aerodynamic diameter, for particles larger than 0.5 μm, and with the diffusive diameter for particles smaller than 0.5 μm.
The deposition mechanisms as a function of particle size and of other parameters are reviewed and their role in total deposition and in the regional detail is assessed.
The size distribution of the aerosol cannot be in general uniquely defined since the smoke is in continuous dynamic size evolution because of the progressive cooling through the tobacco mat and filter. In addition, there may be an important uptake of water in the passage through the airways, with a consequent difficulty in predicting the effective particle size and therefore the total and regional depositions.
The size distribution is measured, in situations of practical interest, by means of an inertial particle spectrometer in the range above 0.5 μm.
Regional and total deposition values obtained in vivo are reviewed.
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© 1984 Plenum Press, New York
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Prodi, V., Mularoni, A. (1984). Particulate Deposition in Smoking. In: Cumming, G., Bonsignore, G. (eds) Smoking and the Lung. Ettore Majorana International Science Series. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2409-6_16
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DOI: https://doi.org/10.1007/978-1-4613-2409-6_16
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