Indoor levels of polycyclic aromatic hydrocarbons (PAHs) from environment tobacco smoke of public bars.

In this work level of Polycyclic Aromatic Hydrocarbon (PAHs) from indoor Environment Tobacco Smoke (ETS) of pubic bars in Nigeria was investigated. Indoor air samples were obtained from different public bars using Polyurethane foam (PUF) passive samplers. Analysis of PAHs was carried out using GC-MS operated in selected ion monitoring mode. Result showed the average concentration range of 2.71-9.69 ng/m3 while the ∑ 16 PAHs range from 43.43 to 155.11 ng/m3. The incremental lifetime cancer risk (ILCR) values from inhalation of PAHs in these bars ranged from 2.4×10-7-5.2×10-7 while non-carcinogenic risk, Hazard Quotient (HQ) ranged from 2×10-4-4.5×10-4. Although these values are lower than WHO permissible limit, nevertheless the study underscores the danger associated with the inhalation of ETS in the public bars in Nigeria.