Functionalization of L-Cystein On Magnetite As Magnetic Adsorbent  Metals for SDG 14. Journal of Current Studies in SDGs, [S. l.], v. 3, n. 1, p. 251, 2026. DOI: 10.63230/jocsis.3.1.251. Disponível em: https://journal.i-ros.org/index.php/JOCSIS/article/view/251. Acesso em: 23 jul. 2026.