Zucchi Orghêda L A D, Moreira Silvana, Salvador Marcos J, Santos Leandro L
Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café, s/n, CEP 14040-903, Ribeirão Preto-SP, Brasil.
J Agric Food Chem. 2005 Oct 5;53(20):7863-9. doi: 10.1021/jf0510945.
Several commercial soft drinks and respective plastic bottles were analyzed for their multielement contents employing the synchrotron radiation total reflection X-ray fluorescence spectrometry technique (SRTXRF). The SRTXRF method has been developed and validated, and about 20 elements were detected in the investigated samples, including some trace elements, which can be toxic for human beings, such as Ti, Cr, Sb, As, and Pb in soft drinks and Al, Sb, As, and Pb in poly(ethylene terephthalate) (PET) containers. Statistical analysis was performed using chemometric techniques (principal component analysis and cluster analysis), and similarities were verified in the multielement contents of the samples. The results demonstrated that the SRTXRF offers a good multielemental approach for the quality control of food products. Moreover, on the basis of enrichment factors, the possibility of the trace elements in the PET container may be leached to the beverages under normal commercial situations and other results were discussed.
采用同步辐射全反射X射线荧光光谱法（SRTXRF）对几种市售软饮料及其相应的塑料瓶进行了多元素含量分析。SRTXRF方法已经得到开发和验证，在所研究的样品中检测到了约20种元素，包括一些对人体有毒的微量元素，如软饮料中的钛、铬、锑、砷和铅，以及聚对苯二甲酸乙二酯（PET）容器中的铝、锑、砷和铅。使用化学计量学技术（主成分分析和聚类分析）进行统计分析，并验证了样品多元素含量的相似性。结果表明，SRTXRF为食品质量控制提供了一种良好的多元素分析方法。此外，基于富集因子，讨论了在正常商业情况下PET容器中的微量元素可能会溶出到饮料中的可能性以及其他结果。
