Poly Ionic Liquid based Aqueous two-Phase Extraction Coupled with UV Spectrophotometry for Separation/analysis of Allura red in Food. London Journal of Engineering Research, [S. l.], v. 23, n. 2, p. 9–18, 2023. Disponível em: https://journalspress.uk/index.php/LJER/article/view/307. Acesso em: 2 feb. 2026.