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

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          Abstract

          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.

          Translated abstract

          Um método para a determinação de bifenilas policloradas (PCB) no leite materno foi desenvolvido e aplicado para avaliar a contaminação de amostras procedentes de quatro cidades brasileiras. Os PCB foram extraídos através da Microextração de Fase Sólida e analisados por Cromatografia Gasosa com Detector por Captura de Elétrons. As figuras de mérito estudadas foram linearidade (1 a 16 µg L-1, r > 0,9884), precisão (RSD < 12%, n = 5), recuperação (71 a 127%) e limite de quantificação (entre 0,45 e 2,42 µg L-1). A análise das vinte amostras revelou níveis de PCB acima de 11,8 µg L-1 na região metropolitana de São Paulo, sendo o PCB 153 encontrado em todas essas amostras. Em Vitória/ES e Florianópolis/SC foram encontrados PCB em 100 e 60% das amostras, respectivamente. Nenhuma contaminação foi detectada nas amostras do Rio Branco/Acre. Sendo assim, uma alta correlação entre a contaminação dessas amostras e o nível de industrialização da região foi encontrada.

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          Most cited references6

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          Chromatography: Concepts and Contrasts

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            Air Quality Guidelines

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              Polychlorinated Biphenyls and Terphenyls: Environmental Health Criteria

              (1993)
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                Author and article information

                Journal
                jbchs
                Journal of the Brazilian Chemical Society
                J. Braz. Chem. Soc.
                Sociedade Brasileira de Química (São Paulo, SP, Brazil )
                0103-5053
                1678-4790
                2010
                : 21
                : 3
                : 502-509
                Affiliations
                [03] Campinas SP orgnameUniversidade Estadual de Campinas orgdiv1Instituto de Química Brazil
                [02] Natal RN orgnameUniversidade Federal do Rio Grande do Norte orgdiv1Centro de Biociências Brazil
                [01] Campinas SP orgnameUniversidade Estadual de Campinas orgdiv1Faculdade de Engenharia de Alimentos Brazil
                Article
                S0103-50532010000300016 S0103-5053(10)02100300016
                10.1590/S0103-50532010000300016
                dc3cee2a-9548-4e68-a953-c33e796a4d0e

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 08 June 2009
                : 11 December 2009
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 44, Pages: 8
                Product

                SciELO Brazil

                Categories
                Articles

                contamination,PCB,HS-SPME,validation,breast milk
                contamination, PCB, HS-SPME, validation, breast milk

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