Phytoaccumulation of heavy metals (Cd, Cr, Ni, Pb) in sediment of the Estero Salado ( Urdesa Norte sector ) in corn crop (zea mays l). Revista Universidad de Guayaquil, [S. l.], v. 116, n. 2, p. 37–42, 2013. DOI: 10.53591/rug.v116i2.667. Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/433. Acesso em: 5 dec. 2025.