Determination of cadmium in agricultural soils of Pallatanga canton, province of Chimborazo, Ecuador . Revista Científica Ciencias Naturales y Ambientales, [S. l.], v. 14, n. 1, 2020. DOI: 10.53591/cna.v14i1.1288. Disponível em: https://revistas.ug.edu.ec/index.php/cna/article/view/1545. Acesso em: 5 dec. 2025.