Abule, E. C., & Ekpete, O. A. (2025). Geochemical Speciation and Environmental Implications of Heavy Metal Mobility in Okporowo-Ekpeye Farmlands Impacted by Artisanal Oil Refining. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , 6(3), 88–95. https://doi.org/10.63561/fnas-jsi.v6i3.955