SAMUEL-OKEY, F. C.; AJIBOLA, V. O. EXTRACTION OF COBALT AND CADMIUM IN MUNICIPAL DUMP SITES AROUND ZARIA, KADUNA STATE USING EDTA AND CITRATE AS COMPLEXING AGENTS. African Journal of Environmental Sciences and Renewable Energy, [S. l.], v. 3, n. 1, p. 85–95, 2022. Disponível em: https://publications.afropolitanjournals.com/index.php/ajesre/article/view/113. Acesso em: 28 oct. 2026.