Abstract
The presence of organochlorine pesticides (α-HCH, β-HCH, lindane, aldrin, dieldrin, heptachlor, heptachlor epoxide, chlordane and the isomers and metabolites of DDT) in Spanish pasteurized milk were investigated. 95% of the samples contained one of the isomers of the HCH group and 12.9% of them exceeded the maximum residue limit permitted by the European Union; six samples went over that limit for heptachlor epoxide and 74.63% of the samples contained chlordane at higher concentrations than those permitted by the legislation. None of the samples exceeded the limit for the DDT group. The mean concentrations detected for each pesticide were as follows (mg/kg): α-HCH = 0.015; β-HCH = 0.039; lindane = 0.007; δ-HCH = 0.07; aldrin = 0.002; dieldrin = 0.028; chlordane = 0.101; heptachlor = 0.011; heptachlor epoxide = 0.021; o, p′-DDD = 0.016; p, p′-DDD = 0.009; p, p′- DDE = 0.045 (DDT + metabolites = 0.067).
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