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Food Science and Technology

versão impressa ISSN 0101-2061

Resumo

FABRIS, Samanta; FREIRE, Maria Teresa de Alvarenga; WAGNER, Roger  e  REYES, Felix Guillermo. A method to determine volatile contaminants in polyethylene terephthalate (PET) packages by HDC-GC-FID and its application to post-consumer materials. Ciênc. Tecnol. Aliment. [online]. 2010, vol.30, n.4, pp.1046-1055. ISSN 0101-2061.  http://dx.doi.org/10.1590/S0101-20612010000400033.

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.

Palavras-chave : extraction; validation; gas chromatography; PET packaging.

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