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Residue analysis of triazine herbicides in soil: Comparison of a capillary gas chromatographic and a high-performance liquid chromatographic method

Rückstandsanalytik von Triazin-Herbiciden im Boden: Vergleich zwischen einer capillar-gas-chromatographischen und einer hochleistungs-flüssig-chromatographischen Methode

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  • Agricultural Analyses
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Zusammenfassung

Zwei Methoden zur Bestimmung von Triazinen im Boden wurden entwickelt und miteinander verglichen. Nach der Extraktion der Rückstände mit Methanol und clean-up durch Gelpermeations-Chromatographie wurden die Proben eingeengt und auf Triazin-Rückstände hin untersucht. Zur Detektion wurden die splitlose Capillar-Gas-Chromatographie mit NP-Detektor (GC-NPD) und die Microbore-Hochdruckflüssig-Chromatographie mit UV-Detektor (HPLC-UV) bei 222 nm verwendet. Beide Methoden ergaben vergleichbare Ergebnisse bei einem Minimum an Zeit- und Materialaufwand und der Möglichkeit der Automatisation der Rückstandsanalytik. Die Microbore-HPLC-Methode erreichte nach einfachem GPC clean-up eine Nachweisgrenze von 10 ppb im Vergleich zu 5 ppb bei der Capillar-GC-Methode. Zufriedenstellende Wiederfindungsraten wurden für beide Methoden bei 80 ppb und 20 ppb ermittelt.

Summary

Two methods for the determination of triazines in soil were developed and compared. After extraction of the residues with methanol and clean-up by gel permeation chromatography, the samples evaporated were analysed for triazines by splitless capillary gas-chromatography with NP-detector (GC-NPD) and microbore high performance liquid chromatography with UV detector (HPLC-UV) at 222 nm. Both methods gave similar results. The microbore HPLC method was suitable for the analysis of a number of triazines at 10 ppb whereas capillary GC method was used for the analysis of triazines at 5 ppb. Satisfactory average recoveries for the two methods were obtained at 80 ppb and 20 ppb, respectively.

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Authors and Affiliations

  1. Institut für Ökologische Chemie, Gesellschaft für Strahlen- und Umweltforschung mbH München, D-8042, Neuherberg, Federal Republic of Germany

    Y. Xu, W. Lorenz, G. Pfister, M. Bahadir & F. Korte

Authors
  1. Y. Xu
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  2. W. Lorenz
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  3. G. Pfister
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  4. M. Bahadir
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  5. F. Korte
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On leave from: Institute of Hydrobiology, Academia Sinica, Wuhan, P. R. China

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Xu, Y., Lorenz, W., Pfister, G. et al. Residue analysis of triazine herbicides in soil: Comparison of a capillary gas chromatographic and a high-performance liquid chromatographic method. Z. Anal. Chem. 325, 377–380 (1986). https://doi.org/10.1007/BF00505463

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  • DOI: https://doi.org/10.1007/BF00505463

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