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HomeIMEP-114, determination of total Cd, Pb, As, Hg and Sn in feed premixes
Interlaboratory comparison report, December 2012
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This report presents the results of the proficiency test IMEP-114 of the EU-RL-HM which focused on the determination of total Cd, Pb, As, Hg and Sn in feed premixes in support to Directive 2002/32/EC of the European Parliament and of the Council on undesirable substances in animal feed. Thirty laboratories from 26 countries registered to the exercise of which 25 reported results for total As, 30 for total Cd, 29 for total Pb, 13 for total Hg and 9 for total Sn. Laboratories were asked to perform two or three independent measurements and to report the mean, the associated uncertainty, the coverage factor of the associated uncertainty and the technique used to perform the measurements. Laboratory results were rated using z- and ζ-scores (zeta-scores) in accordance with ISO 13528. The assigned values (Xref) for the measurands were determined as the mean of the values reported by two expert laboratories. The standard deviation for proficiency assessment (σ), also called target standard deviation, was set to 15 % of the assigned value, for the analytes investigated. Between 60 and 90 % of the laboratories reported satisfactory results for total As and total Cd, and 50 % for total Pb. Only 3 participants reported satisfactory results for total Sn (out of 9 laboratories that reported values). Thirteen participants reported results for total Hg although, according to the expert laboratories the mass fraction for that measurand was below their limit of detection.
- Offentliggjort:
- Forfatter(e): Institut for Referencematerialer og -målinger (Det Fælles Forskningscenter)
- Personlige forfattere: Charoud-Got, Jean ; Calle, Beatriz de la ; Robouch, Piotr ; Korsten, Bibi ; Fiamegkos, Ioannis ; Cordeiro, Fernando ; Leys, Hanne ; Emteborg, Håkan
- Emner: Den veterinære sektor og dyresundhedsbestemmelser , Videnskabelig og teknisk forskning
- Emne: dyreernæring , dyresundhed , forskningsrapport , fødevareforurening , sammenlignende undersøgelse
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| ISSN 1831-9424 | ISBN 978-92-79-28003-0 | DOI 10.2787/69771 | Katalognummer LA-NA-25669-EN-N |
- Released on EU publications website:
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