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Preconcentration of hydrophilic pesticides from aqueous solutions and extraction of residues using the polymeric sorbent Wofatit Y 77

I. Preconcentration of hydrophilic pesticides from water

Anreicherung hydrophiler Pesticide aus wä\rigen Lösungen und Extraktion von Rückständen mit dem Polymer-Adsorber Wofatit Y77

I. Anreicherung hydrophiler Pesticide aus Wasser

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Summary

The new organic polymeric sorbent Y 77, exhibiting a specific surface of > 1200 m2/g and a capacity ∼ 5 mg/g reveals recoveries of > 90% for compounds of high water solubility following adsorption from water or saturated NaCl-solution and elution with methanol. Examples are given for the 32P- or 14C-labelled insecticides methamidophos, trichlorfon and dimethoate and the herbicides Na-trichloroacetate, fenuron, propachlor and 2,4-D. For the more strongly adsorbed hydrophobic compounds the elution by hot solvents is recommended. The hydrophilic metabolites occurring in pesticide metabolism studies, e.g. conjugates, can be adsorbed and separated from the not adsorbed free carbohydrates.

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Authors and Affiliations

  1. Research Unit of Chemical Toxicology, Academy of Sciences, Permoserstrasse 15, DDR-7050, Leipzig, German Democratic Republic

    W. Dedek, K.-D. Wenzel, F. Luft, H. Oberländer & B. Mothes

Authors
  1. W. Dedek
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  2. K.-D. Wenzel
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  3. F. Luft
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  4. H. Oberländer
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  5. B. Mothes
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Dedek, W., Wenzel, KD., Luft, F. et al. Preconcentration of hydrophilic pesticides from aqueous solutions and extraction of residues using the polymeric sorbent Wofatit Y 77. Z. Anal. Chem. 328, 484–486 (1987). https://doi.org/10.1007/BF00475969

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  • DOI: https://doi.org/10.1007/BF00475969

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