Abstract
Vehicular emission is a major environmental health problem in the world today especially in developing countries including Nigeria. This study was centered on assessing the vehicular emissions pollutants such as Carbon monoxide (CO), Hydrogen Sulphide (H2S), Formaldehyde (HCHO) and Total Volatile Organic Compound (TVOC) in Benin City, Edo State, Nigeria. The sampling of the CO and H2S gaseous pollutants was done using H-4S gas analyzer while JCG60 gas detector was used to measure TVOC and HCHO. The meteorological parameters were measured with HTC-1 hygrometer thermometer. AQI was calculated to determine the status of the ambient air quality of the study areas. Carbon monoxide concentration obtained from the result ranges from 3.12-16.1 ppm with location C having the highest amount of 16.1 ppm which exceeds the Federal Environmental Protection Agency (FEPA) standard of 10 ppm. The calculated AQI shows that the study areas are all polluted. Continuous measurement and inventory of air pollutants should be encouraged, as this will enable the policymakers to effectively implement control measures on air pollution.
Highlights
Vehicular emission is a major environmental health problem in the world today especially in developing countries including Nigeria
Vehicular emission is the direct release of pollutants into the atmosphere and it is the dominant source of gaseous pollutants, such as Carbon monoxide (CO), Nitrogen oxide (NOx), Sulphur oxides (SOx), Total Volatile Organic Compounds (VOCs), Hydrogen sulphides (H2S), Total Particulate Matters (TPMs), Formaldehyde (HCHO) and water vapour (Schifter et al, 2000; Guttikunda et al, 2012; Abaje et al, 2020; Adeyemi et al, 2020)
The volume of cars was found to be the highest in all locations which is an indication that majority are car owners while motorcycles are found to be the least in volume because it has been banned in Edo state, Benin City
Summary
This study was centered on assessing the vehicular emissions pollutants such as Carbon monoxide (CO), Hydrogen Sulphide (H2S), Formaldehyde (HCHO) and Total Volatile Organic Compound (TVOC) in Benin City, Edo State, Nigeria. The outcomes of the studies carried out on vehicular emissions in some selected intersections in Nigeria shows the presence of air pollutants in the sampling locations. Traffic congestion due to increased number of motor vehicles, as this will provide important information on air quality for policymakers for the formulation of effective air pollution control measures. The objective of this paper is to assess vehicular emissions pollutants such as Carbon monoxide (CO), Hydrogen Sulphide (H2S), Formaldehyde (HCHO) and Total Volatile Organic Compound (TVOC) in Benin City, Edo State, Nigeria
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