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Mercury speciation in seafood samples by LC–ICP-MS with a rapid ultrasound-assisted extraction procedure: Application to the determination of mercury in Brazilian seafood samples

Batista, Bruno Lemos ; Rodrigues, Jairo L. ; de Souza, Samuel S. ; Oliveira Souza, Vanessa C. ; Barbosa, Fernando

Food chemistry, 2011-06, Vol.126 (4), p.2000-2004 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Mercury speciation in seafood samples by LC–ICP-MS with a rapid ultrasound-assisted extraction procedure: Application to the determination of mercury in Brazilian seafood samples
Autor: Batista, Bruno Lemos ; Rodrigues, Jairo L. ; de Souza, Samuel S. ; Oliveira Souza, Vanessa C. ; Barbosa, Fernando
Assuntos: Biological and medical sciences ; chemical speciation ; equipment performance ; Fish and seafood industries ; food contamination ; Food engineering ; Food industries ; Food samples ; Fundamental and applied biological sciences. Psychology ; General aspects ; ICP-MS ; inductively coupled plasma mass spectrometry ; Liquid chromatography ; mass spectrometry ; Mercury ; Methylmercury ; model food systems ; new methods ; repeatability ; Sample preparation ; seafoods ; Speciation ; validity
É parte de: Food chemistry, 2011-06, Vol.126 (4), p.2000-2004
Notas: http://dx.doi.org/10.1016/j.foodchem.2010.12.068
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Descrição: ► A simple and fast method for Hg speciation in seafood samples is described. ► Fifteen minutes is the total time for sample preparation with quantitative extraction of Hg species. ► Hg species were determined in seafood samples commercialised in the Brazilian markets. This paper describes a simple method for mercury speciation in seafood samples by LC–ICP-MS with a fast sample preparation procedure. Prior to analysis, mercury species were extracted from food samples with a solution containing mercaptoethanol, l-cysteine and HCl and sonication for 15min. Separation of mercury species was accomplished in less than 5min on a C8 reverse phase column with a mobile phase containing 0.05%-v/v mercaptoethanol, 0.4%m/v l-cysteine and 0.06molL−1 ammonium acetate. The method detection limits were found to be 0.25, 0.20 and 0.1ngg−1 for inorganic mercury, ethylmercury and methylmercury, respectively. Method accuracy is traceable to Certified Reference Materials (DOLT-3 and DORM-3) from the National Research Council Canada (NRCC). With the proposed method there is a considerable reduction of the time of sample preparation. Finally, the method was applied for the speciation of mercury in seafood samples purchased from the Brazilian market.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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Mercury speciation in seafood samples by LC–ICP-MS with a rapid ultrasound-assisted extraction procedure: Application to the determination of mercury in Brazilian seafood samples

Batista, Bruno Lemos ; Rodrigues, Jairo L. ; de Souza, Samuel S. ; Oliveira Souza, Vanessa C. ; Barbosa, Fernando

Kidlington: Elsevier Ltd

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