Concentrations of some persistent organochlorine compounds (OCC) in human milk samples from Nigeria are determined. Apart from the commonly detected insecticide residues in Nigerian environment (DDT-complex, HCH-isomers and HCB), polychlorinated biphenyls (PCBs) were also found in four out of the thirty-five samples analysed; the values varied from 0.32#x2013;0.62 mg/kg milk fat. In general, concentrations of the insecticides were low. p,p#x2032;-DDD was not detected in appreciable and quantifiable levels.
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