Horsfall Jnr., M., & Spiff, A. I. (2004). Studies on the effect of pH on the sorption of Pb2+ and Cd2+ ions from aqueous solutions by Caladium bicolor (Wild Cocoyam) biomass. Electronic Journal of Biotechnology, 7(3), 0–0. Retrieved from https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v7n3-8