Spectrophotometric Determination of Co(II) in Vitamin B12 Using 2-(biphenyl-4-yl)-3-((2-(2,4-dinitrophenyl) hydrazono)methyl) imidazo [1,2-a]pyridine as Ligand by Flow Injection–Merging Zone Analysis. Al-Nahrain Journal of Science, [S. l.], v. 23, n. 3, p. 24–38, 2020. Disponível em: https://mail.anjs.edu.iq/index.php/anjs/article/view/2309.. Acesso em: 23 dec. 2024.