Alexander, J. A., Nyong, A. E., Ite, I. A., & Ibok, U. J. (2023). Extraction of Iron (II) and Nickel (II) ions from Aqueous Solution using Palm Kernel Oil as a Green Extractant. Researchers Journal of Science and Technology, 3(3), 44–58. https://doi.org/10.83080/rejost.vol3no3.72