Assessment of Air Quality Parameters in the Vicinity of Selected Dumpsites in Owerri Metropolis, Imo State Nigeria
Ndubueze O. C.
Aguta C. S.
Nwogu O. J.
Dike M. N.
Abstract
Dumpsites are a major factor that contribute to environmental pollution and risk to human. The research aimed to assess air quality conditions at specific dumpsites in Owerri metropolis, Imo state. The methods used were similar to USEPA prescribed method, with a few minor modifications. Measurements were taken at 6 locations within and near the area, utilizing a range of calibrated handheld air quality monitoring devices at each site, eleven (11) air quality indicators were recorded, including particulate matter (PM2.5 and PM10), hydrogen sulfide (H2S), ammonia (NH3), sulfur dioxide (SO2), methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), and nitrogen dioxide (NO2). The findings indicated that PM2.5 and pm10 were present at all dumpsites. The highest readings for all measured parameters were found at the dumpsites, except for CO, which increased as the distance from the dumpsite grew. The air quality parameters varied as follows: CO ranged from 1.00 to 3.50 mg/m3; CO2 from 1157.50 to 1407.00; NO2 from 0.151 to 0.228; and CH4 from 307.50 to 626.50 mg/m3. The results further indicated that all parameters were elevated at the dumpsites compared to the control site (Obinze). This study highlights the need for an effective waste management system to reduce air pollution in the area.
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