Article (Scientific journals)
Performances and limitations of the HRMS method for dioxins, furans and dioxin-like PCBs analysis in animal feedingstuffs Part II: Does it comply with the European pro-active approach?
Eppe, Gauthier; Maghuin-Rogister, Guy; De Pauw, Edwin
2004In Analytica Chimica Acta, 519 (2), p. 243-253
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Keywords :
dioxins; furans; dioxin-like PCBs; HRMS; detection and quantification limits; compliance and non-compliance; measurement uncertainty
Abstract :
[en] Based on the results obtained from the inter-laboratory study in Part 1, different approaches for detection and quantification limits are evaluated and discussed. An overview of the most commonly used concepts and terminologies in analytical chemistry is presented with the aim of establishing a link between them. Whatever the method used by laboratories for detection limit assessment, the median LOD value reported for the less chlorinated PCDD/Fs (i.e. 0.02 ng/kg) is in good agreement with the values recalculated using the inter-laboratory data. For LOQ the Eurachem approach based on a pre-established percentage of repeatability RSD appears to be. suitable. The study shows that a pre-established RSDr of 20% is recommended in order to achieve an acceptable LOQ of 0.05 ng/kg per congener. The 20% value seems to be sufficiently low to act tolerable RSD close to maximum limits. Furthermore, the repeatability and the reproducibility standard deviation against parts-per-trillion congener levels has been modeled by inverse first order functions. This congener precision model provides an interesting tool to subsequently assess the performances of the method in TEQ close to regulatory limits. Finally, the paper discusses two different ways of reporting and interpreting the results to assess compliance against statutory limits. (C) 2004 Elsevier B.V. All rights reserved.
Disciplines :
Chemistry
Food science
Author, co-author :
Eppe, Gauthier  ;  Université de Liège - ULiège > Centre interfac. d'analyse des résidus en traces (CART)
Maghuin-Rogister, Guy ;  Université de Liège - ULiège > Département de sciences des denrées alimentaires > Département de sciences des denrées alimentaires
De Pauw, Edwin  ;  Université de Liège - ULiège > Chimie physique, spectrométrie de masse
Language :
English
Title :
Performances and limitations of the HRMS method for dioxins, furans and dioxin-like PCBs analysis in animal feedingstuffs Part II: Does it comply with the European pro-active approach?
Publication date :
16 August 2004
Journal title :
Analytica Chimica Acta
ISSN :
0003-2670
eISSN :
1873-4324
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
519
Issue :
2
Pages :
243-253
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 March 2009

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