[Residual chlorinated hydrocarbons and polychlorinated biphenyls in milk and milk products].

In the years 1987 to 1988 the residues of chlorinated hydrocarbons (HCB, alpha HCH, gamma HCH, DDE + DDT sum and PCB) were detected in more than 5000 thousand samples of milk and milk products (butter, cream, sheep milk cheese, cheeses). The recorded values of HCB ranged from 0 to 0.90 mg per kg fat, those of alpha HCH from 0 to 0.66 mg per kg, gamma HCH from 0 to 1.66 mg per kg fat, DDT sum from 0 to 1.03 mg per kg fat and PCB from 0 to 4.03 mg per kg fat--the 1988 value. The average values concerning the residues of chlorinated pesticides did not show any increase in comparison with the values recorded in 1980 to 1984. The average recorded values for PCB residues ranged in 1988 from 0.04 to 0.24 mg per kg fat.