Objectives: The Korean government implemented a smoke-free regulation for pubs with a net indoor area of ≥100 m 2 on January 1, 2014. The purpose of this study was to determine the indoor levels of concentrations of particulate matter smaller than 2.5 μm (PM 2.5 ) in implemented and non-implemented pubs in Seoul and Changwon. concentrations in fifty-two 100-150 m 2 (implemented) and fifty-seven <100 m 2 (nonimplemented) pubs were measured. A real-time aerosol monitor was used to measure PM 2.5 concentrations. Field technicians recorded characteristics of the pubs including net indoor area, indoor volume and presence of smoking rooms and counted the number of burning cigarettes, patrons and vents. Results: Differences between indoor and outdoor PM 2.5 concentrations in 100-150 m 2 and <100 m 2 pubs were not significantly different in each city. Smoking was observed in 33% of 100-150 m 2 pubs and 51% of <100 m 2 pubs. Average differences between indoor and outdoor PM 2.5 and <100 m 2 pubs were 79.2 μg/m 3 and 155.6 μg/m 3 , respectively. When smokers were not observed, differences between indoor and outdoor PM 2.5 3 in 100-150 m 2 pubs and 24.5 μg/m 3 in <100 m 2 pubs. Conclusion: Although the regulation was implemented only in ≥100 m 2 pubs, a higher difference between indoor and outdoor PM 2.5 concentrations was observed in implemented and non-implemented pubs with smokers. Strict implementation of the regulation in all pubs is needed for better indoor air quality.
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II. 재료 및 방법
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V. 결 론
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