JIDEOWNO, A.; OKUO, J. M.; OKOLO, P. O. Sorption of Some Heavy Metal Ions by Chitosan and Chemically Modified Chitosan. Biological Sciences - PJSIR, [S. l.], v. 49, n. 6, p. 443–447, 2006. Disponível em: https://v2.pjsir.org/index.php/biological-sciences/article/view/1301. Acesso em: 3 jul. 2024.