International Journal of Scientific Research and Engineering Development

This study evaluate the impact of oil and gas activities on vegetation in Delta State specifically focusing on Isoko South Local Government Area, including the areas of Olomoro and Igbide Communities. The heavy metals investigated were Cu, Pb, Ni, Cr, and Cd, the sample locations were Olomoro Control , Olomoro1, Igbide 1 which was15 meters away from flare stack and Igbide control sample was taken in the community, a Garmin GPSMAP 64SX, a 100ml beaker, steering rod, petri dish, analytical oven, funnel, cottonwool, silica gel, Sodium Sulphate, Dichloromethane Or n-Hexane, analytical syringe, Agilent Gas Chromatographic 6890, GBC AA Savanta (AAS), measuring cylinders, filter papers, nitric acid and hydrochloric acid (HNO3 and HCl) were used in the lab. The results obtained showed a high concentration level of Cd, in all samples from the four sample points, records showed 0.74, 0.38, 0.25 and 0.59mg/kg which were far above WHO permissible limits of 0.02mg/kg, Pb was seen to be 4.91,and 2.31 mg/kg in Olomoro in both Control sample and sample point 1 which is also way above the WHO permissible limits of 2mg/kg, while that of Ni, Cr , and Cu also showed results of 0.28,0.87,0.38 and ,<0.001, which were within the WHO limits of 10 and Cu,1.3, 6.89, 6.34, 2.42, 4.90mg/kg against the international permissible level of 10 mg/kg, this result is an indication that there is heavy metal pollution on the vegetation in the studied areas.

Tegu Benson Tuebi, Suru Olusegun Ebenezer, Olawoyin Samuel Ayomide, Raymond Alex Ekemube,"Evaluation of the Impact of Heavy Metals from Oil and Gas Activities on Vegetation in Isoko South LGA of Delta State" International Journal of Scientific Research and Engineering Development, V9(3): Page(462-469) May-June 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.