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Journal of Dairy Science Vol. 48 No. 7 985-987
© 1965 by American Dairy Science Association ®
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Simplified Method of Sample Clean-Up for Gas Chromatographic Analysis of Chlorinated Insecticide Residues in Milk1

A. R. Stemp and B. J. Liska

Department of Animal Sciences, Purdue University Lafayette, Indiana

ABSTRACT

A modification of the Langlois et al. (1) procedure has further shortened the time for sample clean-up prior to ECGC analysis of insecticides in milk. The use of a slurrying technique allows a technician to analyze 40–50 samples of milk per 8-hr day. In addition, some impurities occasionally encountered in the original procedure have been eliminated. The modification allows for use of larger milk samples to further increase the sensitivity of the method.

FOOTNOTES

1 Published with the approval of the Director of the Purdue Agricultural Experiment Station as Journal Series Paper No. 2476.






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Copyright © 1965 by the American Dairy Science Association ®.