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Report on the 2007 proficiency test of the Community Reference Laboratory Network Determination of aflatoxins in a peanut product and a test solution

Funded under: FP7-JRC

Abstract

A proficiency test was conducted with 31 European National Reference Laboratories (NRLs) for mycotoxins and one Laboratory from Turkey. Test materials were a mixed aflatoxin (Af) solution in acetonitrile and two candidate Certified Reference Materials ("aflatoxin positive" and "blank") that have not yet been released. Laboratories determined the aflatoxin content by reverse-phase high-performance liquid-chromatography (RP-HPLC) with either fluorescence or mass-selective detection against their own standard solutions as reference. Applying the modified Horwitz equation according to Thompson as a basis for the target standard deviation (22% in the case of this proficiency test), 26 out of 32 NRLs achieved z-scores of less than 2 and 17 NRLs reported values within the uncertainty range for both aflatoxin B1 and total aflatoxins in the candidate CRM after correction for recovery in both cases.

Additional information

Authors: STROKA J, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);BREIDBACH A, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);DONCHEVA TSANEVA I, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE)
Bibliographic Reference: EUR 23261 EN (2008), 33 pp. Free of Charge
Availability: http://bookshop.europa.eu/is-bin/INTERSHOP.enfinity/WFS/EU-Bookshop-Site/en_GB/-/EUR/ViewPublication-Start?PublicationKey=LANA23261 (Catalogue Number: LA-NA-23261-EN-C)
ISBN: ISBN: 978-92-79-08394-5
Record Number: 200819951 / Last updated on: 2008-07-28
Category: PUBLICATION
Original language: en
Available languages: en
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