Lead removal in aqueous solution using polyacrylamide-based cryogels as adsorbent: Balance study in batch mode. Revista Torreón Universitario, [S. l.], v. 9, n. 25, p. 77–93, 2020. DOI: 10.5377/torreon.v9i25.9855. Disponível em: https://revistas.unan.edu.ni/index.php/Torreon/article/view/3206. Acesso em: 9 aug. 2025.