PAYEHGHADR, Mahmood; NOURIFARD, Farzaneh. Determination of Ultra Trace Copper in Water Samples by Differential Pulse Polarography after Solid Phase Extraction. Orbital: The Electronic Journal of Chemistry, [S. l.], v. 9, n. 5, p. 354–359, 2017. Disponível em: https://periodicos.ufms.br/index.php/orbital/article/view/16415. Acesso em: 30 jan. 2026.