Article (Scientific journals)
The performance of atmospheric pressure gas chromatography–tandem mass spectrometry compared to gas chromatography–high resolution mass spectrometry for the analysis of polychlorinated dioxins and PCBs in food and feed samples
ten Dam, Guillaume; Pussente, Igor; Scholl, Georges et al.
2016In Journal of Chromatography. A, 1477, p. 76-90
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Keywords :
Dioxin; PCB; atmospheric pressure gas chromatography; tandem mass spectrometry; high resolution mass spectrometry
Abstract :
[en] Recently, gas chromatography tandem mass spectrometry (GC–MS/MS) has been added in EuropeanUnion (EU) legislation as an alternative to magnetic sector high resolution mass spectrometry (HRMS) for the analysis of dioxins and dioxin like polychlorinated biphenyls (dl-PCB) in food and feed. In this study the performance of APGC–MS/MS compared to GC–HRMS is investigated and compared with EU legislation. The study includes the legislative parameters, relative intermediate precision standard devia-tion (SRw,rel), trueness, sensitivity, linear range and ion ratio tolerance. In addition, over 200 real samplesof large variety and spanning several orders of magnitude in concentration were analyzed by both techniques and the selectivity was evaluated by comparing chromatograms. The SRw,rel and trueness were evaluated using (in-house) reference samples and fulfill to EU legislation, though the SRw,rel was better with GC–HRMS. The sensitivity was considerably better than of GC–HRMS while the linear range was similar. Ion ratios were mostly within the tolerable range of ±15%. A (temporary unresolved) systematic deviation in ion ratio was observed for several congeners, yet this did not lead to exceeding of the maxi-mum ion ratio limits. The APGC–MS/MS results for the non-dioxin-like-PCBs (ndl-PCBs) were negatively biased, particularly for PCB138 and 153 in contaminated samples. The selectivity of APGC–MS/MS was lower for several matrices. Particularly for contaminated samples, interfering peaks were observed in the APGC chromatograms of the native compounds (dioxins) and labeled internal standards (PCBs). These can lead to biased results and ultimately to false positive samples. It was concluded that the determination of dioxins and PCBs using APGC–MS/MS meets the requirements set by the European Commission. However, due to generally better selectivity and SRw,rel, GC–HRMS is the preferred method for monitoring purposes.
Research center :
CART - Centre Interfacultaire d'Analyse des Résidus en Traces - ULiège
Disciplines :
Chemistry
Author, co-author :
ten Dam, Guillaume
Pussente, Igor
Scholl, Georges ;  Université de Liège > Département de chimie (sciences) > Center for Analytical Research and Technology (CART)
Eppe, Gauthier  ;  Université de Liège > Département de chimie (sciences) > Chimie analytique inorganique
Schaechtele, Alexander
van Leeuwen, Stefan
Language :
English
Title :
The performance of atmospheric pressure gas chromatography–tandem mass spectrometry compared to gas chromatography–high resolution mass spectrometry for the analysis of polychlorinated dioxins and PCBs in food and feed samples
Publication date :
16 December 2016
Journal title :
Journal of Chromatography. A
ISSN :
0021-9673
eISSN :
1873-3778
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
1477
Pages :
76-90
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 December 2016

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