Rapid Spectrophotometric Method for Determining Erythrosine, Amaranth and Tartrazine in Ternary Mixtures
| Autor: | M. J. Villaseñor Llerena, J. J. Berzas Nevado, C. Guiberteau Cabanillas, J. Rodríguez Flores, A.M. Contento Salcedo |
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| Rok vydání: | 1997 |
| Předmět: |
Detection limit
food.ingredient Chromatography medicine.diagnostic_test Food Colorants Food additive Biochemistry (medical) Clinical Biochemistry Amaranth Erythrosine Biochemistry Analytical Chemistry chemistry.chemical_compound food chemistry Spectrophotometry Electrochemistry medicine Ternary operation Spectroscopy Tartrazine |
| Zdroj: | Analytical Letters. 30:2565-2578 |
| ISSN: | 1532-236X 0003-2719 |
| DOI: | 10.1080/00032719708001766 |
| Popis: | A very simple spectrophotometric method using measurements at zero-crossing wavelength is described for resolving ternary mixtures of the food colorants Erythrosine (E-127), Amaranth (E-123) and Tartrazine (E-102). Calibration graphs are linear up to 14 mg/L of Erythrosine and 28 mg/L for Tartrazine and Amaranth. RSD of 0.80, 0.85 and 1.84% were obtained for nine standards of 8 mg/L of Erythrosine, 8 mg/L of Tartrazine and 8 mg/L of Amaranth, respectively. Detection limits of 0.052, 0.934 and 0.123 mg/L were obtained for Erythrosine, Tartrazine and Amaranth, respectively. This method was satisfactorily used for determining synthetic mixtures of these colorants in different ratios and it was successfully applied to a commercial product containing the three dyes; no separation step is required. The results were compared with those obtained by liquid chromatography and very similar values were found by both methods. |
| Databáze: | OpenAIRE |
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