• 환경위생공학
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• 제20권4호통권58호
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• pp.69-75
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• 2005

Professional taxi driver exposure to indoor air pollutants has been a subject of concern in recent years because of higher levels of air pollutants, comparing to the surrounding atmosphere. This study evaluated the potential exposure to respirable suspended particulate (RSP), nitrogen dioxide $(NO_2)$ and volatile organic compounds (VOCs; benzene and toluene) for professional taxi drivers inside each of 10 vehicles in Pusan, comparing weekday (Monday and Thursday) and weekend (Saturday). Indoor mean concentrations of RSP inside vehicle were $53.88\;ug/m^3\;and\;75.52\;ug/m^3$ on weekday and weekend, respectively. Measured indoor $NO_2$ concentrations were 28.32ppb and 40.69 ppb, respectively. Benzene and toluene mean concentrations inside vehicle were 5.41 ppb and 11.36 ppb, respectively. Considering no smoking of taxi drivers inside vehicle, closed window in winter, and increased usage of taxi on weekend, source of indoor air pollutants inside taxi might be mainly suggested from the number of passenger's carried, faulty exhaust systems, and engine and carburetor evaporative emissions.