Sidestream tobacco smoke as the main predictor of exposure to polycyclic aromatic hydrocarbons

Citations Over TimeTop 11% of 2004 papers

Abstract

Polycyclic aromatic hydrocarbons (PAHs) were measured in mainstream and sidestream tobacco smoke from 14 commercial brands of cigarettes purchased in Italy during 2001-2002. The PAHs detected in smoke and analysed with HPLC and a fluorimetric detector were: fluoranthene, pyrene, benzo[a]anthracene, chrysene, benzo[a]pyrene, benzo[b] fluoranthene, benzo[k] fluoranthene, benzo[g,h,i]perylene and dibenzo[a,h]anthracene. The PAH levels in mainstream smoke from different cigarette brands obtained using an official smoking machine varied by about threefold (from 118 to 374 ng per cigarette for total PAHs and from 23.5 to 100 ng per cigarette for carcinogenic PAHs). Total PAH levels in mainstream smoke were correlated with tar content (r = 0.615, P < 0.05, n = 14). Total PAH content in sidestream smoke, measured by collection of all the smoke produced by a lit cigarette in a glass chamber, was about tenfold higher compared with mainstream smoke. The PAH content in sidestream smoke was relatively uniform (2.3-3.9 and 0.49-1.21 micro g per cigarette for total and carcinogenic PAHs, respectively) and was not correlated with tar content. These results indicate that cigarette manufacturing and filter characteristics influence the PAH composition of mainstream smoke, but have no effect on the PAH content in sidestream smoke, which is the main determinant of smokers' and non-smokers' exposure to PAHs in environmental tobacco smoke.

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