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In a recent paper by Dr. Godson Rowland Ana and Mr. OlusolaOlabisiOgunseye, carbon monoxide (CO), a poisonous gas and carbon dioxide (CO2), one of the major greenhouse gases wereassessed and their relationship with meteorological parameters in three motor parks in Ibadan, Nigeria. A cross-sectional comparative design was adopted for the study. Akinyele Motor Park (AMP) in Akinyele Local Government Area (LGA), Iwo Road Motor Park (IMP) in Ibadan North East LGA and New Garage Motor Park (NMP) in Ibadan South West LGA were purposively selected and levels of CO and CO2 were monitored with appropriate gas meters, meteorological parameters were also monitored using Ventus W155 wireless weather station.
“Motor parks in Nigeria are public areas where various activities take place. In addition to vehicular emissions, there are other sources of emission in motor parks that release CO, CO2 and other gases into the motor park ambient environment”, Ana and Ogunseye said.
In the paper, Ana and Ogunseye showed that mean CO and CO2concentrations for afternoon period was higher than that of morning and there were temporal variations in the levels of CO and CO2 across the 8 hours of monitoring and spatial variations across the sampling points. It was also noted in the paper that CO concentrations were higher than World Health Organization (WHO) guideline of 9 ppm for 8 hour monitoring across the motor parks while CO2 concentrations were within American Society for Heating Refrigerating and Air-conditioning Engineers (ASHRAE) guideline of 400 ppm.
Ana and Ogunseye proceeded to state that there was a significant positive correlation between CO and CO2. Generally, CO and CO2 concentrations in the motor parks have significant relationships with meteorological parameters. Temporal variations were observed for all the meteorological parameters across the 8 hours of monitoring at the motor parks and there were marked relationships between them.
Ana and Ogunseye concluded that motor park users are exposed to high concentrations of CO and are therefore susceptible to effects of CO exposure. Meteorology also has influence on the levels of CO and CO2 in the motor parks and recommended routine monitoring of CO and CO2 in order to ensure these emissions do not exceed guideline limits.
Dr. Godson Rowland Ana and Mr. OlusolaOlabisiOgunseye, Department of Environmental Health Sciences,Faculty of Public Health, College of Medicine, University of Ibadan, Ibadan, Nigeria.
A paper about the study appeared recently in International Journal of Environmental Monitoring and Analysis