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

  • Fabris S
  • Freire M
  • Wagner R
  • et al.
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Abstract

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.

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Fabris, S., Freire, M. T. de A., Wagner, R., & Reyes, F. G. (2010). A method to determine volatile contaminants in polyethylene terephthalate (PET) packages by HDC-GC-FID and its application to post-consumer materials. Ciência e Tecnologia de Alimentos, 30(4), 1046–1055. https://doi.org/10.1590/s0101-20612010000400033

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