Tope-Ajayi Opeyemi Oluwaseun
Department of Environmental Management and Toxicology, Federal University of Agriculture, PMB 2240, Abeokuta, Nigeria

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Mapping of Traffic-Related Air Pollution Using GIS Techniques in Ijebu-Ode, Nigeria Oludare Hakeem Adedeji; Olasumbo Oluwafunmilayo; Tope-Ajayi Opeyemi Oluwaseun
Indonesian Journal of Geography Vol 48, No 1 (2016): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8934.543 KB) | DOI: 10.22146/ijg.12488

Abstract

Spatial and temporal characteristics of traffic related air pollutants (CO, NO, NO2 and SO2) in Ijebu-ode, Nigeria were determined using replicate portable gas detectors (Land Duo Multi Gas Monitor) at selected road junctions, motor garages and markets. Mapping of different concentration of air pollutants was carried out using kriging type of interpolation method in GIS environment. Concentration of CO ranges from 4.8 ppm at Erinlu/Molipa Roundabout to 137ppm on Sagamu/Ore Expressway. Concentrations of NO2  range from 100-662 ppb with overall average value (OAV) of 299.8 ppb, while concentration of nitrogen oxide (NO) ranges between 67-302 ppb and OAV of 166.23 ppb. SO2 had concentration ranging between 38-245 ppb and an OAV of 139.07 ppb all of which are above standard ambient air quality standards. AQI indicated very unhealthy air quality in most areas which calls for the need to establish and strengthen the health-based standard for air pollutants.