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

Universidade Estadual de Campinas, Campinas, Brazil¹  Augusto, Fabio¹  Universidade Federal do Rio Grande do Norte, Natal, Brazil¹  Kowalski, Cláudia H.¹  Godoy, Helena T.¹  Costa, Josemar G.¹ 

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

DOI  :  10.1590/S0103-50532010000300016

学科分类：化学（综合）

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】

Unknown