Determination of UV stabilizers in PET bottles by high performance-size exclusion chromatography.
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.
Monteiro
M
M
Ciencia de Alimentos/FEA, UNICAMP, Campinas, Säo Paulo, Brazil.
Nerín
C
C
Reyes
F G
FG
D000818:Animals; D000975:Antioxidants / Q000032:analysis; D002084:Butylated Hydroxytoluene / Q000032:analysis; D002850:Chromatography, Gel / Q000379:methods; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005503:Food Additives / Q000032:analysis*; D018857:Food Packaging; D008401:Gas Chromatography-Mass Spectrometry; D017905:Phosphites / Q000032:analysis; D011108:Polymers / Q000032:analysis*; D011837:Radiation-Protective Agents / Q000032:analysis; D014230:Triazoles / Q000032:analysis; D014466:Ultraviolet Rays
D000975:Antioxidants; D005503:Food Additives; D017905:Phosphites; D011108:Polymers; D011837:Radiation-Protective Agents; D014230:Triazoles; D002084:Butylated Hydroxytoluene; C033674:benazol P; C083748:tris-(2,4-di-tert-butylphenyl) phosphite; C016151:tinuvin