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Reduction of Matrix-effects in Pesticide Analysis with Gas Chromatography-Ion Trap Mass Spectrometry (GC/ITD-MS) by Clean-up Processes

2002; Wiley; Volume: 30; Issue: 2-3 Linguagem: Inglês

10.1002/1521-401x(200211)30

1521-401X

Fouad Mourabit, Ayse B. Deger, T. J. Gremm, Abdelmad Ouassini, Fritz H. Frimmel,

Pesticide Residue Analysis and Safety

Acta hydrochimica et hydrobiologicaVolume 30, Issue 2-3 p. 108-116 Research Paper Reduction of Matrix-effects in Pesticide Analysis with Gas Chromatography-Ion Trap Mass Spectrometry (GC/ITD-MS) by Clean-up Processes Fouad Mourabit, Fouad Mourabit Department of Chemistry, Faculty of Sciences, Abdelmalek Essaadi University, B.P. 2121, Tetouan, MoroccoSearch for more papers by this authorAyse B. Deger, Ayse B. Deger Engler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanySearch for more papers by this authorThomas J. Gremm, Thomas J. Gremm Engler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanySearch for more papers by this authorAbdelmad Ouassini, Abdelmad Ouassini Faculté des Sciences et Techniques de Tanger, UFR: Techniques physico-chimique de dépollution et environnement, B.P. 416, 90 000 Tanger, MoroccoSearch for more papers by this authorFritz H. Frimmel, Corresponding Author Fritz H. Frimmel [email protected] Engler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanyEngler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanySearch for more papers by this author Fouad Mourabit, Fouad Mourabit Department of Chemistry, Faculty of Sciences, Abdelmalek Essaadi University, B.P. 2121, Tetouan, MoroccoSearch for more papers by this authorAyse B. Deger, Ayse B. Deger Engler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanySearch for more papers by this authorThomas J. Gremm, Thomas J. Gremm Engler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanySearch for more papers by this authorAbdelmad Ouassini, Abdelmad Ouassini Faculté des Sciences et Techniques de Tanger, UFR: Techniques physico-chimique de dépollution et environnement, B.P. 416, 90 000 Tanger, MoroccoSearch for more papers by this authorFritz H. Frimmel, Corresponding Author Fritz H. Frimmel [email protected] Engler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanyEngler-Bunte-Institut, Bereich Wasserchemie, Universität Karlsruhe (TH), Engler-Bunte-Ring 1, 76131 Karlsruhe, GermanySearch for more papers by this author First published: 18 November 2002 https://doi.org/10.1002/1521-401X(200211)30:2/3 3.0.CO;2-3Citations: 7AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstracten In this work analytical determination of some pesticides frequently used in Morocco and Turkey was carried out with solid-phase extraction (SPE) and gas chromatography-ion trap mass spectrometry (GC/ITD-MS). Because of coextracts from the SPE material and/or water sample, recovery values beyond 100 % for some of the selected analytes were observed. This enhanced signal intensity was explained by an enhanced ionisation that is introduced by coeluting sample matrix. A clean-up method using florisil was tested for the removal of matrix substances. The removal of coextracts in the sample after forisil clean-up was proved by a standard addition method. Abstractde Probenaufbereitungsschritte zur Verminderung von Matrixeffekten bei der Pestizidanalytik mittels Gaschromatographie-Ion-Trap-Massenspektrometrie (GC/ITD-MS) In der vorliegenden Arbeit wurde die analytische Bestimmung einiger in Marokko und der Türkei häufig verwendeter Pestizide mittels Gaschromatographie-Ion-Trap-Massenspektrometrie (GC/ITD-MS) nach vorhergehender Festphasenextraktion (SPE) vorgenommen. Aufgrund von Co-Extrakten aus dem Festphasenmaterial und/oder der Wasserprobe wurde für einige der Analyten eine Wiederfindung von über 100 % beobachtet. Die verstärkte Signalintensität wird auf die zusätzliche Ionisierung co-eluierender Matrixbestandteile zurückgeführt. Durch einen Vorreinigungsschritt mit Florisil ließen sich die Matrixbestandteile entfernen, was mit Hilfe der Standardadditionsmethode gezeigt wurde. REFERENCES 1 Mourabit, F., Ouassini, A., Azmani, A., Nitrate occurrence in the groundwater of the Loukkos perimeter. J. Environ. 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