Abstract
The AOAC, de Faubert Maunder et al., and Wood methods have been examined for determining BHC, aldrin, heptachlor, DDT, and their major metabolites in milk, butter, cheese, and eggs. Also, the AOAC and the Laboratory of the Government Chemist (UK) methods have been investigated for these pesticides in apples, and both of the latter methods, together with a current EEC method, have been evaluated for measuring the pesticides in potatoes, carrots, and cabbages. Recoveries for these methods were determined by using samples with both added and incurred pesticide residues. There were no gross discrepancies in the results obtained by the different methods, although for certain foodstuffs and in certain situations some methods appeared preferable to others.
Work of the Government Chemist
