Pesticide residues in foodstuffs in Great Britain. IX. Aldrin, dieldrin and other organochlorine pesticide residues in potatoes and carrots
Lee, D.F.
Journal of the Science of Food and Agriculture 19(12): 701-705
1968
ISSN/ISBN: 0022-5142 PMID: 5714582 Accession: 014601960
For part 8 see Abst. 2331, Vol. 39. 9. Potatoes from 186 commercial crops from fields treated with aldrin or dieldrin in the year of cropping contained mean residues of aldrin plus dieldrin of 0.01 ppm in the flesh and 0.11 ppm in the skin. In 70 crops from fields treated before the year of cropping and 44 crops from reputedly untreated fields corresponding mean residues were less than 0.01 and 0.02 ppm. Alpha- and gamma-BHC were detected in trace or greater amounts in 73% and pp'DDE in 10% of the samples. Carrots from 97 commercial crops from fields treated with aldrin or dieldrin in the year of cropping contained mean residues of aldrin plus dieldrin of less than 0.01 ppm in the flesh and 0.21 ppm in the skin. From 50 crops treated before the year of cropping mean residues were lessthan 0.01 and 0.07 ppm. Six crops from reputedly untreated fields contained a mean residue of less than 0.01 ppm dieldrin in the skin only. Alpha- and gamma-BHC were found in the majority of the samples with mean total residue of less than 0.01 ppm in the flesh and 0.03 ppm in the skin but pp'DDE or pp'DDT was detected in only 12% of the samples.