OPURUM, J. I.; COOKEY, G. .A.; OBUNWO, C. C. Adsorption of Pb (II) Ions from Aqueous Solution by Citric Acid Modified and Unmodified Cucumeropsis manii (Melon) Pod Husks. Journal of Chemical Society of Nigeria, [S. l.], v. 44, n. 6, 2019. Disponível em: http://www.journals.chemsociety.org.ng/index.php/jcsn/article/view/369. Acesso em: 13 may. 2025.