Plastic Production Unit Scientific Equipment Development Institute Akwuke Nigeria;
Chemical Engineering Department Nnamdi Azikiwe University Awka Nigeria;
Department of Geological Sciences Nnamdi Azikwe University Awka Nigeria;
Department of Community Medicine University of Nigeria Enugu Campus Enugu Nigeria;
Chemistry Department Federal University of Technology Owerri Nigeria;
Physicochemical Parameters; Heavy Metals; Pollution; Soils; Auto-Mechanic Workshops; Fuel Filling Stations; Waste Dump Sites and Metal Scrap Dumps;