Determination of polychlorinated biphenyls in brazilian breast milk samples using solid-phase microextraction and gas chromatography-electron capture detection

Journal of the Brazilian Chemical Society

Cláudia H. Kowalski²  Josemar G. Costa¹  Helena T. Godoy²  Fabio Augusto¹ 

[1] ,Universidade Estadual de Campinas Faculdade de Engenharia de Alimentos Campinas SP ,Brazil

关键词: PCB;    HS-SPME;    validation;    breast milk;    contamination;   

DOI  :  10.1590/S0103-50532010000300016

来源: SciELO

【 摘 要 】

A method for the determination of polychlorinated biphenyls (PCB) in breast milk was developed and applied to evaluate the contamination of samples that proceed from four Brazilian cities. PCB were extracted by Solid-Phase Microextraction and analyzed by Gas Chromatography with Electron Capture Detector. The figures of merit studied were linearity (to 16 µg L-1, r > 0.9884), precision (RSD < 12%, n = 5), recovery (71 to 127%) and limit of quantification (between 0.45 and 2.42 µg L-1). The analysis of the twenty samples revealed PCB levels above 11.8 µg L-1 in São Paulo metropolitan area being the PCB 153 found in all these samples. In Vitória/ES and Florianopolis/SC were found PCB in 100 and 60% of the samples, respectively. No contamination was detected in the samples from Rio Branco/AC. Thus, a high correlation between the contamination of these samples and the level of industrialization of the region was found.

【 授权许可】

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