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Determination of tin and lead in sediment slurries by graphite furnace atomic absorption spectrometry

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Abstract

Methods were determined for lead and tin determinations in river, marine and lake sediments by slurry sampling and graphite furnace atomic absorption spectrometry. The optimizations were carried out using River Sediment BCR 320 and Marine Sediment PACS-2 for Pb and Sn, respectively. For Pb determination, the parameters studied included inorganic acid mixture, stabilizing agent, sample mass and sonication time. The influence of diluents and the extraction to the liquid phase for two different matrices was evaluated for Sn. The Pb content in the slurry liquid phase was ca. 56%, and ranged from 75% to 100% for Sn. Representative masses of 34 and 45 mg, and effective masses of 12 and 48 μg for Pb and Sn, respectively, were obtained under optimized conditions. Detection and quantification limits of 0.2 and 0.7 μg g−1 for Pb, and 1.5–2.6 and 4.5–7.6 μg g−1 for Sn were obtained.

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Acknowledgements

The authors thank the Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP, São Paulo, Brazil) for the financial support and for a fellowship to A.S.L. (Grant number 05/52975-9) as well as the Conselho Nacional de Desenvolvimento Científico e Tecnológico for a fellowship to M.A.Z.A. We also thank the Financiadora de Estudos e Projetos (FINEP, Rio de Janeiro, Brazil) for the financial assistance and Prof. Carol H. Collins for the language assistance.

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  1. Group of Spectrometry, Sample Preparation and Mechanization—GEPAM, Institute of Chemistry, University of Campinas—UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil

    Aline Soriano Lopes & Marco Aurélio Zezzi Arruda

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  1. Aline Soriano Lopes
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  2. Marco Aurélio Zezzi Arruda
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Correspondence to Marco Aurélio Zezzi Arruda.

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Lopes, A.S., Arruda, M.A.Z. Determination of tin and lead in sediment slurries by graphite furnace atomic absorption spectrometry. Microchim Acta 164, 445–451 (2009). https://doi.org/10.1007/s00604-008-0081-7

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  • DOI: https://doi.org/10.1007/s00604-008-0081-7

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