TALITHA, Anandieka Maya; EL-DAHSHAN, Zainab; AAL, Abd-El. Optimization of Solid Phase Extraction Using Chelating Disk for Cr(III) and Fe(III) Concentration in Water Samples by ICP-AES Analysis. Journal of Chemical Learning Innovation, [S. l.], v. 3, n. 1, p. 123–133, 2026. DOI: 10.37251/jocli.v3i1.3243. Disponível em: https://cahaya-ic.com/index.php/JoCLI/article/view/3243. Acesso em: 25 may. 2026.