A Simple Spectrophotometric Method for the Determination of Copper in Some Real, Environmental, Biological, Food and Soil Samples Using Salicylaldehyde Benzoyl Hydrazone. Pak. J. Anal. Environ. Chem. [Internet]. 2025 Apr. 22 [cited 2025 Nov. 5];13(1):22-35. Available from: https://pjaec.pk/index.php/pjaec/article/view/385