ABSTRACT
The main goal of this work is to monitor the trends in carbon monoxide, nitrogen dioxide and aerosols concentrations across Ikeja, Lagos state, using geographic information system and remotely sensed atmospheric pollution data. The timeframe of data collected was January 2019 to December 2023 on a three-year interval which are 2019,2021,2023. The concentration was classified into three classes; low, moderate and high. The mean concentration of carbon monoxide for 2019, 2021 and 2023 were 0.54473594mol/m2 , 0.056588376mol/m2 , 0.052521317mol/m2 . The mean concentration of Aerosols for 2019,2021 and 2023 were - 0.36935897mol/m2 , -0.252527532mol/m2 , 0.346384011mol/m2 respectively. The mean concentration of Nitrogen Dioxide for 2019, 2021, 2023 were 0.0001056mol/m2 , 0.000131004mol/m2 ,0.000115566mol/m2 respectively. The analyzed data results showed that there was high significant difference (p<0.001) between in carbon monoxide and aerosols concentration over the three years period. However, there was no significant difference (p>0.05) in Nitrogen Dioxide over the three years period. The observed decrease in the levels of carbon monoxide (CO) and nitrogen dioxide (NO2) in Ikeja, Lagos State, from 2019 to 2023 is an encouraging sign of progress in improving air quality and mitigating the adverse effects of air pollution. The reduction is linked to reduced human activities and industrial process during this period. This positive trend can be attributed to a combination of factors, including the implementation of stricter emission standards, improvement in fuel quality, adoption of cleaner technologies, and a shift towards cleaner energy sources. Based on the results above it is recommended that Continuous monitoring, implementation of stricter regulations, and the promotion of clean technologies and sustainable practices across all sectors are necessary to ensure a healthier and more sustainable environment for the residents of Ikeja and the larger Lagos State. Collaborative efforts between government agencies, industries, environmental organizations, and the general public are essential in addressing the challenges of air pollution and fostering a cleaner and greener future for the region.
