Determination of copper (II) by simple extraction procedure prior to differential pulse polarography using 4-(2-hydroxy phenyl ethaminodiol),benzene-. GJSFR [Internet]. 2010 Jan. 15 [cited 2026 Feb. 6];10(2):-. Available from: https://www.journalofscience.org/index.php/GJSFR/article/view/100004