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

Química Nova

Lima, Luis F. R. de¹  Romão, Wanderson¹  Universidade Federal do Espírito Santo, Vitória, Brasil¹  Shimamoto, Gustavo G.¹  Salvador, Vitor T.¹  Abreu, Nathassia D. de¹  Bueno, Maria Izabel M. S.¹  S. Filho, Elói A.¹  Universidade Estadual de Campinas, Campinas, Brasil¹  Castro, Eustáquio V. R. de¹  Kazitoris, Bianca¹ 

关键词: antimony;    PET bottles;    X-ray fluorescence.;   

DOI  :  10.1590/S0100-40422011000800017

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown