Removal of Arsenic from Groundwater with Low Cost Multilayer Media. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 11, n. 1, p. 28–35, 2025. DOI: 10.21743/. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/425. Acesso em: 3 jul. 2025.