A method to determine volatile contaminants in polyethylene terephthalate (PET) packages by HDC-GC-FID and its application to post-consumer materials

Food Science and Technology (Campinas)

Samanta Fabris²  Maria Teresa De Alvarenga Freire¹  Roger Wagner²  Felix Guillermo Reyes² 

[1] ,Universidade Estadual de Campinas Faculdade de Engenharia de Alimentos Departamento de Ciência de AlimentosCampinas SP ,Brasil

关键词: extraction;    validation;    gas chromatography;    PET packaging;    extração;    validação;    cromatografia gasosa;    PET;   

DOI  :  10.1590/S0101-20612010000400033

来源: SciELO

【 摘 要 】

A simple and low cost method to determine volatile contaminants in post-consumer recycled PET flakes was developed and validated by Headspace Dynamic Concentration and Gas Chromatography-Flame Ionization Detection (HDC-GC-FID). The analytical parameters evaluated by using surrogates include: correlation coefficient, detection limit, quantification limit, accuracy, intra-assay precision, and inter-assay precision. In order to compare the efficiency of the proposed method to recognized automated techniques, post-consumer PET packaging samples collected in Brazil were used. GC-MS was used to confirm the identity of the substances identified in the PET packaging. Some of the identified contaminants were estimated in the post-consumer material at concentrations higher than 220 ng.g-1. The findings in this work corroborate data available in the scientific literature pointing out the suitability of the proposed analytical method.

【 授权许可】

CC BY   
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