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
| Autor: | Bianca Kazitoris, Nathassia D. de Abreu, Eloi Alves da Silva Filho, Gustavo G. Shimamoto, Luis F. R. de Lima, Eustáquio V.R. Castro, Wanderson Romão, Maria Izabel M. S. Bueno, Vitor T. Salvador |
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| Jazyk: | portugalština |
| Rok vydání: | 2011 |
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| Zdroj: | Química Nova v.34 n.8 2011 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Vol 34, Iss 8, Pp 1389-1393 (2011) Química Nova, Volume: 34, Issue: 8, Pages: 1389-1393, Published: 2011 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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