Heavy Metal Pollution Assessment in surface and groundwater in the Ponce Enríquez mining area, Ecuador. LACCEI, [S. l.], v. 1, n. 8, 2024. DOI: 10.18687/LACCEI2023.1.1.493. Disponível em: https://ojs-laccei.2230.com.ar/index.php/laccei/article/view/2930. Acesso em: 13 dec. 2025.