Analytical Methods for Pesticides

  • H. P. Burchfield


The analysis of pesticide residues presents unusual problems because of the small amounts of materials that must be measured and the large amounts of interfering substances that must be removed. Tolerances for all compounds used on edible crops are set by the Food and Drug Administration. For, compounds that possess low toxicity, tolerances are relatively high. Thus, residues of 7 ppm of DDT are permissible. However, crops containing a few hundredths of a ppm of endrin can be condemned. It is often necessary to analyze for much smaller residues than these in environmental health studies, since residues of pesticides in water at the parts per trillion (ppt) level are significant because aquatic flora and fauna are able to accumulate them against concentration gradients. In general, it is necessary to be able to analyze for pesticides at the 0.01 to 10 ppm level in foods and animal tissues and at the ppt or ppblevels and upward in environmental pollution studies.


Pesticide Residue Paper Chromatography Electron Capture Detector Organic Phosphate Chlorinate Hydrocarbon 
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  1. 1.
    H.P. Burchfield, D.E. Johnson, and E.E. Storks, “Guideto the Analysis of Pesticide Residues,” (prepared for the U.S. Department of Health, Education, and Welfare, Public Health Service, Bureau of State Services, Environmental Health, Office of Pesticides). U.S. Government Printing Office, No. 26/2 — P43/2 Vols. I and II, 1965.Google Scholar
  2. 2.
    H.P. Burchfield, J.W. Rhoades, and R.J. Wheeler, “Simultaneous and Selective Detection of Phosphorus, Sulfur, and Halogen in Pesticides by Microcoulometric Gas Chromatography,” J. Argic. Food Chem. 13:511, 1965.CrossRefGoogle Scholar
  3. 3.
    L. Giuffrida, “A Flame Ionization Detector Highly Selective and Sensitive to Phosphorus—A Sodium Thermionic Detector,” J. Assoc. Off. Agr. Chem. 47:293, 1964.Google Scholar
  4. 4.
    A.N. McCormack, S.C. Tong, and W.D. Cooke, “Sensitive Selective Gas Chromatography Detector Based on Emission Spectrometry of Organic Compounds,” Anal. Chem. 37:1470, 1965.CrossRefGoogle Scholar

Copyright information

© Plenum Press 1967

Authors and Affiliations

  • H. P. Burchfield
    • 1
  1. 1.Pesticide Research LaboratoryU. S. Public Health ServicePerrineUSA

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