Metronidazole concentration measured spectrophotometrically using a diazotization and coupling reaction with 5-sulphosalicylic acid. Samarra Journal of Pure and Applied Science, [S. l.], v. 6, n. 4, p. 54–68, 2024. DOI: 10.54153/sjpas.2024.v6i4.760. Disponível em: https://www.sjpas.com/index.php/sjpas/article/view/760. Acesso em: 16 apr. 2026.