Artículos de revistas
Determination Of Uv Stabilizers In Pet Bottles By High Performance-size Exclusion Chromatography.
Registro en:
Food Additives And Contaminants. v. 13, n. 5, p. 575-86, 1996-Jul.
0265-203X
10.1080/02652039609374442
8799719
Autor
Monteiro, M
Nerín, C
Reyes, F G
Institución
Resumen
A Size Exclusion Chromatography-High Performance Liquid Chromatography (SECHPLC) method to determine antioxidants and UV stabilizers in PET bottles has been developed. In only a single run a synthetic mixture of the stabilizers was separated and quantified. The detection limit obtained for BHT, Tinuvin 326, Cyasorb UV 5411, and Tinuvin P was about 0.1 microgram/g and for Irgafos 168 it was 1.0 microgram. RSD values were lower than 3%. Tinuvin P was identified and quantified in PET bottle extracts. Olive oil, soybean oil and sunflower oil showed well defined separation from Tinuvin P at the same conditions of analysis. Cyclic dimers were identified in the PET extracts. 13 575-86