HARIHARAN, A.V.L.N.S.H. Solvent Extraction of Chromium(VI) from Othophosphoric and Perchloric Acid Solutions by Triphenylphosphine Oxide. Asian Journal of Chemistry, [S. l.], v. 19, n. 2, p. 1363–1368, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/20255. Acesso em: 5 jul. 2024.