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Though passive smoking is known to be hazardous, non-smokers are still exposed to ETS.Therefore smoking booth has been suggested as one of the methods to reduce exposure of second-hand smoke.Due to the absence of the smoking booth management standards in Korea, smokers may be exposed to high levels of contaminants in the smoking booth.Also non-smokers may be exposed to the gas leaked from the smoking booth.In this study, we measured concentrations of particle matter (PM10, PM2.5) and VOCs in smoking booth, and assessed their concentration levels and removal efficiency of the exhaust smoke.For this study, a smoking booth(L×H×W=2.2m×1.8m×2.1m) equipped with filters(HEPA, carbon) and forced ventilation system was installed.Continuous measurements of PM10, PM2.5 were obtained during non-smoking and smoking, using a GRIMM 1107 laser spectrometer.VOCs samples were analyzed by GC/MS(Agilent, 6890/5975B, USA).Mean concentrations of PM10(840.5 μg/m3), PM2.5(818.1 μg/m3) during smoking were about 15~20 times higher than those during non-smoking.PM2.5 accounted for 91% of the PM10 mass during smoking.Cigarette smoke was discharged through the carbon filter by the forced ventilation system.The removal efficiencies of target VOCs were ethylbenzene(56.52 %) > benzene(40.49 %) > m,p-xylene(38.47 %) >o-xylene(29.86 %) > styrene(28.06 %) > toluene(18.32 %) in order.Based on these results, we will characterize the ventilation rate settings and filter replacement cycle of smoking booths.