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Analysis of polychlorinated dibenzo-p-dioxins, dibenzofurans and dioxin-like polychlorinated biphenyls in vegetable oil samples by gas chromatography–ion trap tandem mass spectrometry

AutorMalavia, Jessica; Ábalos, Manuela; Santos, F. Javier; Abad Holgado, Esteban; Rivera Aranda, Josep; Galcerán, M. Teresa
Palabras claveTandem mass spectrometry
Polychlorinated dibenzo-p-dioxins (PCDDs)
Polychlorinated dibenzofurans (PCDFs)
Dioxin-like polychlorinated biphenyls (dl-PCBs)
Ion trap mass spectrometry
Fecha de publicación19-mar-2007
CitaciónJournal of Chromatography A 1149(2): 321-332 (2007)
ResumenGas chromatography coupled to ion trap tandem mass spectrometry (CG–MS–MS) has been evaluated for the analysis of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) and dioxin-like polychlorinated biphenyls (dl-PCBs) in vegetable oil samples containing different concentration levels (0.2–6 pg WHO-TEQ g−1 for both PCDD/Fs and dl-PCBs) of the 29 toxic congeners of PCDD/F and dioxin-like PCBs. The effect of potential interfering compounds such as polychlorinated naphthalenes (PCNs), polychlorinated biphenyls (PCBs) and polychlorinated diphenylethers (PCDEs) on the quantification of mono-ortho PCBs has been investigated. In addition, the influence of the clean-up procedure on the final determination by CG–MS–MS was studied, showing that the quality of the results depends to a great extent on this analytical step. Quality parameters have been established and good precisions (CV: 3–19%) and low limits of detection for PCDD/Fs (0.04–0.20 pg g−1 oil) and dl-PCBs (0.08–0.64 pg g−1 oil) were obtained. The method was validated by a comparison of the CG–MS–MS results with those obtained by GC–HRMS.
Descripción12 pages, 5 figures.-- PMID: 17399728 [PubMed].-- Printed version published on May 18, 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.chroma.2007.03.052
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