CONTRIBUTIONS OF METAL WELDING WORKSHOPS TO ENVIRONMENTAL POLLUTION IN AKURE METROPOLIS, ONDO STATE, NIGERIA
Adekeye, E. A; Ojo, M. A and Ajayi, O. O.
Journal Title:Journal of Environmental Issues and Agriculture in Developing Countries
The concentrations of eight metals - Zinc (Zn), Chromium (Cr), Iron (Fe), Manganese (Mn), Lead (Pb), Cadmium (Cd), Copper (Cu), and Cobalt (Co) in soil samples of selected gas and electric welding workshops in Akure of Ondo State in Nigeria were determined. This was aimed at assessing the contribution of welding activities to environmental pollution. Soil samples were collected from five gas and five electric welding workshops. A control sample collected for each of the welding workshops was about 100meters away from the study samples. The study samples and the control samples were pretreated digested and analyzed using atomic absorption spectrometer. The differences between the study samples and the control samples indicated that the welding activities are possible sources of environmental metal pollution. Foods of plant origin come from soil as such care should be taken to monitor the metal concentration of these metals in the soil as this is a channel through which metals can inadvertently enter the food chain.