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. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 14, n. 1, p. 01–15, 2013. DOI: 10.21743/. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/358. Acesso em: 12 jul. 2025.