BARZALLO, Diego; VERA, Humberto; GAVIN, César; LAZO, Rafael. Simultaneous determination of trace metals in soil samples by inductive coupling plasma atomic emission spectrometry (ICP-OES). Ecuadorian Science Journal, [S. l.], v. 5, n. 4, p. 130–139, 2021. DOI: 10.46480/esj.5.4.176. Disponível em: https://journals.gdeon.org/index.php/esj/article/view/176.. Acesso em: 13 sep. 2025.