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Type: Artigo de periódico
Title: Quantification Of Antimony In Brazilian Polyethylene Terephthalate (pet) Bottles By X-ray Fluorescence And Chemometric Evaluation To Verify The Presence Of Recycled Pet Through Iron Content. [quantificação De Antimônio Em Garrafas De Politereftalato De Etileno (pet) Brasileiras Por Fluorescência De Raios-x E Avaliação Quimiométrica Para Verificar A Presença De Pet Reciclado Através Do Teor De Ferro]
Author: Shimamoto G.G.
Kazitoris B.
De Lima L.F.R.
De Abreu N.D.
Salvador V.T.
Bueno M.I.M.S.
De Castro E.V.R.
Filho E.A.S.
Romao W.
Abstract: Antimony is a common catalyst in the synthesis of polyethylene terephthalate used for food-grade bottles manufacturing. However, antimony residues in final products are transferred to juices, soft drinks or water. The literature reports mentions of toxicity associated to antimony. In this work, a green, fast and direct method to quantify antimony, sulfur, iron and copper, in PET bottles by X-ray fluorescence spectrometry is presented. 2.4 to 11 mg Sb kg-1 were found in 20 samples analyzed. The coupling of the multielemental technique to chemometric treatment provided also the possibility to classify PET samples between bottle-grade PET/ recycled PET blends by Fe content.
Rights: aberto
Identifier DOI: 10.1590/S0100-40422011000800017
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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