PAYEHGHADR, M.; HAGHGOO QEZELJE, H.; NOURIFARD, F.; ATTARAN, A.; KALHOR, M. Preconcentration of ultra-traces of Cu(II) in water samples using SBA-15 sorbent modified with a thiocarbohydrazide ligand prior to determination by flame atomic absorption spectrometry. Journal of the Serbian Chemical Society, Belgrade, Serbia, v. 84, n. 5, p. 489-501, 2019. DOI: 10.2298/JSC180606093P. Disponível em: https://shd-pub.org.rs/index.php/JSCS/article/view/6950. Acesso em: 13 apr. 2021.