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Zur Problematik der Bestimmung geringer Rückstandskonzentrationen von Äthylenthioharnstoff in pflanzlichen Erntegütern

Problems arising with the determination of ethylenethiourea residues in vegetable foodstuffs

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Summary

It has been shown by residue analysis for ethylene thiourea in plant crops using gel and high performance liquid chromatography that residues are considerably reduced when the samples are macerated for extraction, and the plant juices are liberated. Consequently, residue values which are too low are obtained. Therefore, it is recommended, that only surface rinsing should be used.

Zusammenfassung

In Untersuchungen zur Rückstandsanalytik von Äthylenthioharnstoff (ETU) in pflanzlichen Erntegütern auf gel- und hochdruck-flüssigkeitschromatographi-schem Wege wurde gezeigt, daß die bei der Zerkleinerung des Probenguts für die Extraktion freigesetzten Pflanzensäfte die ursprünglichen ETU-Gehalte erheblich reduzieren und daß damit ein zu geringer Rückstandswert erhalten wird. Es wird daher ausschließlich Oberflächen-Abspülung empfohlen.

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Authors and Affiliations

  1. Institut für Pflanzenschutzmittelforschung, Biologische Bundesanstalt für Land- und Forstwirtschaft, D-1000, Berlin, Bundesrepublik Deutschland

    Jochen Pflugmacher & Winfried Ebing

Authors
  1. Jochen Pflugmacher
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  2. Winfried Ebing
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Pflugmacher, J., Ebing, W. Zur Problematik der Bestimmung geringer Rückstandskonzentrationen von Äthylenthioharnstoff in pflanzlichen Erntegütern. Z Lebensm Unters Forch 178, 90–92 (1984). https://doi.org/10.1007/BF01088840

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  • DOI: https://doi.org/10.1007/BF01088840

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