398 research outputs found

    Indoor secondhand tobacco smoke emission levels in six Lebanese cities

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    Background: To date, Lebanon has failed to enact comprehensive clean indoor air laws despite ratification of the Framework Convention on Tobacco Control (FCTC), which calls for the protection of non-smokers from exposure to secondhand tobacco smoke (SHS). Complicating the problem of SHS exposure in Lebanon is the widespread use of the tobacco water-pipe. While most research on SHS has involved cigarette smoking as a source of emissions, other sources, including tobacco water-pipes, may be an important contributor. Methods: PM2.5PM_{2.5} concentrations (μg/m3)(\mu g/m^3) were measured in a sample of 28 public venues located in six major Lebanese cities. Active smoker density (number of smokers/100 m3/100 m^3) was calculated for both water-pipe and cigarette smokers. Venues were then categorised as having higher density of water-pipe smokers or higher density of cigarette smokers, and resultant emission levels were compared between the two groups. Results: Cigarette and water-pipe smoking was observed in 14 venues, while cigarette smoking only and water-pipe smoking only were found in 12 venues and one venue, respectively. Among all smoking-permitted venues, the mean PM2.5PM_{2.5} concentration was 342 μg/m3342 \mu g/m^3. Venues with a higher density of water-pipe smokers (n=14)(n =14) showed a similar median PM2.5PM_{2.5} concentration 349 μg/m3349 \mu g/m^3 compared with venues with a higher density of cigarette smokers (n=13;241 μg/m3;p=0.159)(n =13; 241 \mu g/m^3; p=0.159). The mean PM2.5PM_{2.5} concentration in the single venue with a voluntary smoke-free policy was 6 μg/m36 \mu g/m^3. Conclusions: Despite ratification of the FCTC in 2005, both cigarette and water-pipe smoking are commonly practised in enclosed public places throughout Lebanon, leading to unsafe levels of indoor particulate pollution. Smoke-free policies are needed in Lebanon to protect the public's health, and should apply to all forms of tobacco smoking
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