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Journal of Applied Sciences
  Year: 2006 | Volume: 6 | Issue: 6 | Page No.: 1384-1388
DOI: 10.3923/jas.2006.1384.1388
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Carbon Monoxide Monitoring at Stationary and Mobile Stations

Mohammad Pourmahabadian and Nabie Mansouri

This study was conducted to determine citizen exposures to CO in Kermanshah city. Measurements were made through 20 stationary and 54 mobile stations in different areas of the city and totally 2240 air samples were collected. Different variables such as weekly days, daytime (morning and afternoon), seasons, wind effects and taxi ages were investigated. The results showed that minimum CO concentration levels are existed at less traffic area stations in summer. But maximum levels of CO concentrations were observed in commercial area stations in winter and in all mobile stations CO concentration levels were very high. CO concentration variation levels were exceeded from 9 ppm for 8 h and 35 ppm for 1 h, as specified by US EPA at commercial area stations and all mobile stations. High concentration levels of CO concentrations belong to taxi cabin in fall season, so that by increasing taxi age (based on car making year or year of registration)) from 8 to 21 years, CO concentration levels came down and up in spring and summer, respectively. In addition, the results showed that CO concentration levels in even highly polluted of commercial area station decreases considerably on weekend (Friday) and at high wind speed of 3.5 m sec-1. But, high CO concentrations levels were observed at different seasons in all mobile stations. Finally, variation patterns of CO concentrations inside of taxi cabin are related to the driving speed of taxi and CO peak concentrations after sudden brake are higher than 60 ppm.
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How to cite this article:

Mohammad Pourmahabadian and Nabie Mansouri , 2006. Carbon Monoxide Monitoring at Stationary and Mobile Stations. Journal of Applied Sciences, 6: 1384-1388.

DOI: 10.3923/jas.2006.1384.1388






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