Graphene oxide/NiO nanocomposite-modified carbon paste electrode for the simultaneous detection of carmoisine and tartrazine as two azo dyes in food samples: Original scientific paper. Journal of Electrochemical Science and Engineering, [S. l.], v. 16, 2026. DOI: 10.5599/jese.3341. Disponível em: https://pub.iapchem.org/ojs/index.php/JESE/article/view/3341. Acesso em: 22 may. 2026.