Rapid Thin-layer Chromatographic Screening for Parathion in Canned Peaches Without Cleanup

  • Daniel E. Ott
  • Fred E. Hearth
  • Francis A. Gunther


The extensive use of parathion as an insecticide on commercially grown peaches in California has created a need for a rapid screening method for the insecticide in the marketable crop. Using the method of KOVACS (1), with only slight modifications with respect to activation time of thin-layer chromatography (TLC) plates and the use of a simplified developing tank, concentrates of extractives of commercially canned peaches in methylene chloride stripping solution may be chromatographed and subjected to a series of chromogenic spray reactions to yield in about one hour qualitative and semi-quantitative information in the range 0.5 to 11 p.p.m. of residual parathion.


Silver Nitrate Solution Citric Acid Solution Immobile Phase Rapid Screening Method Marketable Crop 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1966

Authors and Affiliations

  • Daniel E. Ott
    • 1
  • Fred E. Hearth
    • 1
  • Francis A. Gunther
    • 1
  1. 1.Department of EntomologyUniversity of CaliforniaRiversideUSA

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