Igberase, E. and Sithole, N.T. 2024. [Retracted Article] The adsorption of Pb2+ and Ni2+ ions utilizing modified chitosan beads: A response surface methodology and artificial neural network modelling study. EQA - International Journal of Environmental Quality. 61, (Jan. 2024), 1–15. DOI:https://doi.org/10.6092/issn.2281-4485/18471.