Author/Authors :
GOLHOSSEINI، MOHAMMAD JAVAD نويسنده Department of Occupational Health, School of Public Health, Gilan University of Medical Sciences, Rasht, Iran , , KAKOOEI، HOSSEIN نويسنده Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , , SHAHTAHERI، SEYED JAMALEDDIN نويسنده Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , , Azam، Kamal نويسنده Department of Epidemiology and Biostatistics, School of Public health, , , PANAHI، DAVOOD نويسنده Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ,
Abstract :
Occupational exposure to carbon monoxide (CO) of taxi drivers has seldom been evaluated in Iran. Accordingly, in-vehicle CO levels were evaluated during 6 months inside the taxis between May 2009 and October 2010. The CO concentrations of 36 personal samples were collected using a direct reading instrument equipped with electrochemical sensor. The arithmetic mean of the personal monitoring CO levels was 19.84 ± 4.24 ppm per day, with a range of 13.29-33.46 ppm. The observed concentrations of CO fell well lower than occupational standards. Exposures to CO during traffic flow in the evening were considerably higher than those measured in the morning. The weekdays, months and atmospheric environment had a significant effect on exposure to CO (p < 0.0001). The average CO level was 19.84 ± 4.24 ppm, which was higher than the outdoor CO levels (3.21 ppm). In conclusion, the penetration of outdoor CO pollution and engine combustion/exhaust infiltration constituted the main sources of the taxis driversʹ personal exposure to CO.
