M. Payehghadr and F. Nourifard, “Determination of Ultra Trace Copper in Water Samples by Differential Pulse Polarography after Solid Phase Extraction”, Orbital: Electron. J. Chem., vol. 9, no. 5, pp. 354–359, Dec. 2017, Accessed: Jan. 30, 2026. [Online]. Available: https://periodicos.ufms.br/index.php/orbital/article/view/16415