MOSTAFAVI, A.; AFZALI, D.; A. TAHER, M. Simultaneous Separation and Preconcentration Trace Amounts of Cd2+, Mn2+, Ni2+, Zn2+ and Fe2+ onto Modified Amberlite XAD-4 Resin that Loaded with Pyrocatechol Violet. Asian Journal of Chemistry, [S. l.], v. 18, n. 3, p. 2303–2309, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/20988. Acesso em: 3 oct. 2024.