MONITORING SPATIAL VARIATION OF AMBIENT AIR POLLUTANTS IN ALIMOSHO LOCAL GOVERNMENT AREA OF LAGOS STATE

Abstract

Monitoring ambient air pollutants covers all necessary steps and actions to mitigate the increasing negative impacts of air pollutants on health, the economy and the environment. Ambient air pollution is a significant cause of death and disease globally. This study specifically identifies the source and concentration of pollutants in the study area and the effect of climatic variables on the pollutants. Data obtained from the direct fieldwork carried out were further analysed using tables, figures, and SPSS software to determine the mean, error of mean and standard deviation. The findings of the study revealed that measured levels of NO , O , CO, PM and PM in all sampling sites were relatively high and above regulatory limits; 2 3 2.5 10 however, there was no significant difference except in SPM (at all the sampling points) and NO (only in important traffic 2 intersection). The sources in the four site classes studied (traffic-related, dumpsite emission, commercial and residential) are contributory but with varying contributions; however residential sources are very low. The results suggest that strict and appropriate vehicle emission management of industrial air pollution control and close burning management of wastes should be considered in the study area to reduce the risks associated with these pollutants. Moreso, relevant regulatory bodies must develop monitoring mechanisms, regulations and enforcement measures. National development and driveshould focus more on renewable and alternate energy.