Analysis of heptachlor and related

L.H. Stanker, B. Watkins, M. Vanderlaan, R. Elhs, and J. Rajan, Analysis of heptachlor and related cyclodiene insecticides on food products, in Immunoassays for Trace Chemical Analysis, ed. M. Vanderlaan, L.H. Stanker, B.S. Watkins, and D.W. Roberts, American Chemical Society, Washington, DC, Chapter 12, pp. 108-123 (1991). 

Stanker LH, Watkins B, Vanderlaan M, et al. 1989. Analysis of heptachlor and related cyclodiene insecticides in food products. In Vanderlaan M, ed. ACS (American Chemical Society) Symposium Series, 451. Immunoassays for trace chemical analysis Monitoring toxic chemicals in humans, food and the environment Meeting, Honolulu, Hawaii, December 17-22. Washington, DC American Chemical Society, 108-123. 

Analysis of Heptachlor and Related Cyclodiene Insecticides in Food Products... 

The cELISA can easily detect heptachlor contamination in the range of 0.1 PPM to 10 PPM, with minimal sample clean-up. Only 5 grams of material in the case of beef fat and Hsh or 1 mL of dairy cream was necessary for analysis. The large amount of florisil used was necessary to remove as much fat as possible since excess fat appears to interfere with the immunoassay. Commercial solid-phase florisil columns did not give satisfactory results. Failure of these columns may be related to the small amount of florisil in commercial columns being insufficient to remove the fat, to improper activation and deactivation of the resin, or a combination of these. In our... 

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