title: Accuracy of a method based on atomic absorption spectrometry to determine inorganic arsenic in food: Outcome of the collaborative trial IMEP-41.
abstract: A collaborative trial was conducted 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) subsequent extraction of the inorganic arsenic present in the acid medium using chloroform followed by back-extraction to acidic medium. The final detection and quantification is done by flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS). The seven test items used in this exercise were reference materials covering a broad range of matrices: mussels, cabbage, seaweed (hijiki), fish protein, rice, wheat, mushrooms, with concentrations ranging from 0.074 to 7.55mgkg(-1). The relative standard deviation for repeatability (RSDr) ranged from 4.1 to 10.3%, while the relative standard deviation for reproducibility (RSDR) ranged from 6.1 to 22.8%.
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, 111 Retieseweg, 2440 Geel, Belgium.
authors.forename: I
authors.initials: I
authors.lastname: Fiamegkos
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, 111 Retieseweg, 2440 Geel, Belgium.
authors.forename: F
authors.initials: F
authors.lastname: Cordeiro
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, 111 Retieseweg, 2440 Geel, Belgium.
authors.forename: P
authors.initials: P
authors.lastname: Robouch
authors.affiliation: Metal Contamination Laboratory (IATA-CSIC), Avd. Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Vélez
authors.affiliation: Metal Contamination Laboratory (IATA-CSIC), Avd. Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Devesa
authors.affiliation: Institute of Chemistry, University of Graz, Universitätsplatz 1, 8010 Graz, Austria.
authors.forename: G
authors.initials: G
authors.lastname: Raber
authors.affiliation: Technical University of Denmark, National Food Institute, Division of Food Chemistry, Mørkhøj Bygade 19, 2860 Søborg, Denmark.
authors.forename: J J
authors.initials: JJ
authors.lastname: Sloth
authors.affiliation: Technical University of Denmark, National Food Institute, Division of Food Chemistry, Mørkhøj Bygade 19, 2860 Søborg, Denmark.
authors.forename: R R
authors.initials: RR
authors.lastname: Rasmussen
authors.affiliation: Department of Analytical Chemistry, University of Barcelona, Martí I Franque's 1-11, 08028 Barcelona, Spain.
authors.forename: T
authors.initials: T
authors.lastname: Llorente-Mirandes
authors.affiliation: Department of Analytical Chemistry, University of Barcelona, Martí I Franque's 1-11, 08028 Barcelona, Spain.
authors.forename: J F
authors.initials: JF
authors.lastname: Lopez-Sanchez
authors.affiliation: Department of Analytical Chemistry, University of Barcelona, Martí I Franque's 1-11, 08028 Barcelona, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Rubio
authors.affiliation: Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità-Italian National Health Institute, Viale Regina Elena 299, 00161 Rome, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Cubadda
authors.affiliation: Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità-Italian National Health Institute, Viale Regina Elena 299, 00161 Rome, Italy.
authors.forename: M
authors.initials: M
authors.lastname: D'Amato
authors.affiliation: Trace Element Speciation Laboratory (TESLA), University of Aberdeen, College of Physical Science, Chemistry, Meston Walk, Aberdeen AB24 3UE, Scotland, United Kingdom.
authors.forename: J
authors.initials: J
authors.lastname: Feldmann
authors.affiliation: Trace Element Speciation Laboratory (TESLA), University of Aberdeen, College of Physical Science, Chemistry, Meston Walk, Aberdeen AB24 3UE, Scotland, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Raab
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, 111 Retieseweg, 2440 Geel, Belgium.
authors.forename: H
authors.initials: H
authors.lastname: Emteborg
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, 111 Retieseweg, 2440 Geel, Belgium. Electronic address: Maria.de-la-calle@ec.europa.eu.
authors.forename: M B
authors.initials: MB
authors.lastname: de la Calle
mesh_terms: D000363:Agaricales / Q000737:chemistry; D000818:Animals; D001151:Arsenic / Q000032:analysis*; D049872:Bivalvia / Q000737:chemistry; D001937:Brassica / Q000737:chemistry; D029941:Fish Proteins / Q000737:chemistry; D005504:Food Analysis; D005506:Food Contamination / Q000032:analysis*; D012275:Oryza / Q000737:chemistry; D015203:Reproducibility of Results; D012624:Seaweed / Q000737:chemistry; D013054:Spectrophotometry, Atomic; D014908:Triticum / Q000737:chemistry
chemical_list: D029941:Fish Proteins; D001151:Arsenic
keywords: Algae; Cereals; Collaborative trial; Fish; Inorganic arsenic; Mushrooms; Mussels; Vegetables