Environmental dust granulometry and microbial load in the presence of tobacco smoke

Respirology : Official Journal of the Asian Pacific Society of Respirology
Gianni MacrinaPaolo Crimi

Abstract

Several studies describe damage from passive smoking in humans. However, it is not clearly understood how different chemical and physical components relate to mechanisms of damage. This investigation was focused on the particulate phase of environmental cigarette smoke. The size of particles is very important in the inhalation process and subsequent deposition of particles in the airways. The granulometry of suspended dust and bacterial particles was studied in a 120-m(3) no-smoking room during and after the smoking of one cigarette in ten separate experiments. Granulometry was assessed by a six-channel particle counter. Suspended microbial load was evaluated by a surface air system. The sedimented bacterial load was evaluated by the air microbial index technique, which expresses the total number of microorganisms settling on a Petri plate under gravity. The number of large particles increased during the first minute of smoking, and then decreased to basal levels. The number of medium-sized particles increased during the first 10 min of cigarette smoking, and then decreased to basal levels. The number of small particles increased over the whole experimental period. Bacterial and mycotic load decreased during and up to 60 min af...Continue Reading

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Citations

Apr 9, 2009·Respirology : Official Journal of the Asian Pacific Society of Respirology·Martin R J Kolb, Ian Yang
Jul 13, 2012·Industrial Health·Carmela Romana Natalina CorraoMaria De Giusti

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