A Simple Spectrophotometric Method for the Trace Determination of Zinc in Some Real, Environmental, Biological, Pharmaceutical, Milk and Soil Samples Using5,7- Dibromo-8-hydroxyquinoline. Pak. J. Anal. Environ. Chem. [Internet]. 2013 Jun. 3 [cited 2025 Jul. 12];14(1):01-15. Available from: https://pjaec.pk/index.php/pjaec/article/view/358