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Determination of bromoxynil and ioxynil residues in cereals and soil by GC-ITD

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Summary

Bromoxynil and ioxynil have been determined inplants and soil by gas chromatography. These herbicides are extracted from soil samples with methylene chloride at acidic pH. Plant samples are extracted with a basic acqueous solution and extracts purified by solvent partitioning. Herbicide residues are submitted to perfluoroacylation prior to GC separation. These compoiunds are determined by ion-trap detection with single ion monitoring; N-(3-chloro-4 methyl-phenyl_ perfluoropropyl amide is used as internal standard. The detection limit of the method is near 0.001 μg g−1 for the samples studied. The proposed methods are sensitive and reproducible enough to allow determination of these herbicides at residue levels in plants and soil.

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Authors and Affiliations

  1. Department of Plant Protection, CIT-INIA, Apdo 8111, 28080, Madrid, Spain

    C. Sánches-Burnete, A. I. García-Valcárcel & J. L. Tadeo

Authors
  1. C. Sánches-Burnete
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  2. A. I. García-Valcárcel
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  3. J. L. Tadeo
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Sánches-Burnete, C., García-Valcárcel, A.I. & Tadeo, J.L. Determination of bromoxynil and ioxynil residues in cereals and soil by GC-ITD. Chromatographia 38, 624–628 (1994). https://doi.org/10.1007/BF02277165

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  • DOI: https://doi.org/10.1007/BF02277165

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