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Particle size in the smoke produced by six different types of cigarette


Journal title : Revue des Maladies Respiratoires
Volume : 24
issue : 7
Pagination : 845-852
Publication date : 01/09/2007

Document type > *Article de revue

Keywords > lung deposition, tobacco smoke

Research Unit > IRSN/DEI/SESUC

Authors > ATTOUI M., BECQUEMIN Marie Hélène, BERTHOLON J., DAUTZENBERG B., ROY Francis, ROY M.

Publication Date > 01/09/2007

Summary

Introduction: For several decades a more peripheral distribution of the broncho-pulmonary pathologies related to tobacco has been observed. Methods: The aim of this study is to examine whether changes in the particle size of cigarette smoke as the result of new manufacturing technologies could play a part in the observed epidemiologic changes through a more distal disposition of smoke particles in the airways. Using a smoking machine and a low pressure electrostatic impactor we measured the particle size of the smoke from six different types of cigarette, representing old and new manufacturing techniques. The effect of a filter was assessed by a size analyser measuring the electrical mobility of the particles. Results: The results show a difference in particle size between the primary smoke inhaled by the smoker, S1 (0.27 +/- 0.03 microm.) and the secondary smoke, S2 inhaled by passive smokers (0.09 +/- 0.01 microm). There is no difference in particle size between the 6 different types of cigarette. Filters dilute the smoke without altering particle size. Conclusion: The recent alterations in the distribution of tobacco related pathologies cannot be explained by changes in particle size in cigarette smoke. The explanation has to sought elsewhere.

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