Zuñiga H, Medina R. Total chromium bioadsorption using immobilized queñua (Polylepis incana) tannin in aqueous solutions. Rev. Cienc. agrar. [Internet]. 2026 Feb. 7 [cited 2026 Jul. 7];5(1):15-30. Available from: https://revistas.inudi.edu.pe/rca/article/view/176