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Certification of total arsenic, dimethylarsinic acid and arsenobetaine contents in a tuna fish powder (BCR-CRM 627) |
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| Authors: | F Lagarde M B Amran M J F Leroy C Demesmay M Ollé A Lamotte H Muntau P Michel P Thomas S Caroli E Larsen P Bonner G Rauret M Foulkes A Howard B Griepink E A Maier |
| Institution: | Laboratoire de Chimie Analytique et Minérale, URA 405 (CNRS-ECPM-Université Louis Pasteur), ECPM, 1 rue Blaise Pascal, BP 296, F-67008 Strasbourg Cédex, France, FR Service Central d’Analyse, Echangeur de Solaize BP22, F-69390 Vernaison Cédex, France, FR Joint Research Center, Commission of the European Communities, I-21020 Ispra, Italy, IT IFREMER, BP 1049, F-44037 Nantes Cédex, France, FR Institut Pasteur de Lille, Départment Eaux Environnement, BP 245, F-59019 Lille Cédex, France, FR Istituto Superiore de la Sanita, Lab. Igiene del Teritorio, 299 viale Regina Elena, I-00161 Roma, Italy, IT Institute of food chemistry & nutrition, National Food Agency, DK 2860 Soeborg, Denmark, DK State Laboratory Abbosttown, IRL-15 Dublin, Ireland, IE Universidad de Barcelona, Dept. Quimica Analitica, Av. Diagonal 647, E-08028 Barcelona, Spain, ES University of Plymouth, Dept. of Environmental Sciences, UK-PL4 8AA Plymouth, Great Britain, GB University of Southampton, Dept. of Chemistry, UK-SO9 Highfield, Southampton, Great Britain, GB European Commission, Standards, Measurement and Testing Programme, rue de la Loi 200, B-1049 Brussels, Belgium, BE |
| Abstract: | Tuna fishes were collected in the Straits of Messina (Italy), were dissected and dorsal muscles minced, freeze-dried, ground and sieved. The obtained powder was stabilised by γ-irradiation and filled into brown glass bottles. The homogeneity and stability at +20?°C and +40?°C were verified with regards to the total arsenic, dimethylarsinic acid and arsenobetaine contents. Ten laboratories participated in the certification study. All participants had demonstrated beforehand their ability to produce accurate results for the As speciation in fish tissue. The certified values are: total arsenic (4.8 ± 0.3) mg/kg, arsenobetaine (52 ± 3) μmol/kg, dimethylarsinic acid (2.0 ± 0.3) μmol/kg. The material is available from the BCR since early 1998. |
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