Title: Report on the 2008 Proficiency Test of the Community Reference Laboratory for Mycotoxins, for the Network of National Reference Laboratories, regarding the Determination of Deoxynivalenol in a Cereal Product and a Test Solution
Authors: STROKA JoergDONCHEVA IvankaBREIDBACH AndreasMISCHKE Carsten
Publisher: OPOCE
Publication Year: 2009
JRC Publication N°: JRC51226
ISBN: 978-92-79-11977-4
ISSN: 1018-5593
Other Identifiers: EUR 23787 EN
OPOCE LA-NA-23787-EN-C
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC51226
Type: EUR - Scientific and Technical Research Reports
Abstract: A proficiency test was conducted by the Community Reference Laboratory for Mycotoxins with 33 European National Reference Laboratories (NRLs) for Mycotoxins and 2 Laboratory from candidate countries, thus a total of 35 participants. Test materials were a deoxynivalenol (DON) solution in acetonitrile and three cereal test materials. Laboratories determined the DON content by either enzyme linked immuno sorbent assay (ELISA), gas chromatography (GC) or reverse-phase high-performance liquid-chromatography (RP-HPLC). One NRL did not report any results. Applying the Horwitz equation as a basis for the target standard deviation (19% in the case of this proficiency test), 27 out of the remaining 34 laboratories reported values within the z-score limit of 2 after recovery correction of the result for the DON-positive sample. Twenty-five laboratories reported results within a z-score limit of 1. Thus, 79 % of the participating laboratories performed satisfactorily in the proficiency test. No z scores were calculated for the blank material.
JRC Institute:Institute for Reference Materials and Measurements

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