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dc.contributor.authorFIAMEGKOS IOANNISen_GB
dc.contributor.authorCORDEIRO RAPOSO Fernandoen_GB
dc.contributor.authorROBOUCH Piotren_GB
dc.contributor.authorVELEZ Dinorazen_GB
dc.contributor.authorDEVESA Vicentaen_GB
dc.contributor.authorRABER Georgen_GB
dc.contributor.authorSLOTH J.en_GB
dc.contributor.authorRASMUSSEN Rieen_GB
dc.contributor.authorLLORENTE-MIRANDES Tonien_GB
dc.contributor.authorLOPEZ-SANCHEZ J Ferminen_GB
dc.contributor.authorRUBIO Roseren_GB
dc.contributor.authorCUBADDA Fen_GB
dc.contributor.authorAMATO M.en_GB
dc.contributor.authorFELDMANN J.en_GB
dc.contributor.authorRAAB Aen_GB
dc.contributor.authorEMTEBORG HAKANen_GB
dc.contributor.authorDE LA CALLE GUNTINAS Maria Beatrizen_GB
dc.identifier.citationFOOD CHEMISTRY vol. 213 p. 169-179en_GB
dc.description.abstractA collaborative trial, was conducted in accordance with international protocols to determine the performance characteristics of an analytical method for the quantification of inorganic arsenic (iAs) in food. The method is based on (i) solubilisation of the protein matrix with concentrated hydrochloric acid to denature proteins and allow the release of all arsenic species into solution, and (ii) the subsequent extraction of the inorganic arsenic present in the acid medium using chloroform followed by back-extraction to acid medium. The final detection and quantification is done by flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS). Thirteen laboratories, from nine EU countries, registered for participation. All were experienced in the analysis of inorganic arsenic in various food commodities using FI-HG-AAS. The seven test items used in this exercise were all reference materials (either certified reference materials or test items of former IMEP proficiency tests) covering a broad range of matrices and concentrations: mussels tissue (EC-JRC-IRMM, ERM-CE278k), cabbage (IAEA, IAEA-359), seaweed (Hijiki) (NMIJ, CRM 7405a), fish protein (NRC, DORM-4), rice (EC-JRC-IRMM, IMEP-107), wheat (EC-JRC-IRMM, IMEP-112), mushrooms (EC-JRC-IRMM, IMEP-116) and finally rice (EC-JRC-IRMM, ERM-BC211), which was used as pre-test item for training purposes. The mass fraction of iAs was not known for all the test items used, for this reason five laboratories with recognised experience in the analysis of iAs were asked to analyse the test items using a method of their choice, different from the one being validated, in order to compare with the FI-HG-AAS method. The relative standard deviation for repeatability of the validated method (RSDr) ranged from 4.1 to 10.3 %, while the relative standard deviation for reproducibility (RSDR) ranged from 6.1 to 22.8 %. The precision and trueness of the method made it fit-for-the-purpose of determining iAs mass fractions ranging from 0.074 to 7.55 mg kg-1.en_GB
dc.description.sponsorshipJRC.F.5-Food and Feed Complianceen_GB
dc.publisherELSEVIER SCI LTDen_GB
dc.titleAccuracy of a method based on atomic absorption spectrometry to determine inorganic arsenic in food: Outcome of the collaborative trial IMEP-41en_GB
dc.typeArticles in periodicals and booksen_GB
JRC Directorate:Health, Consumers and Reference Materials

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