Agricultural chemical residues in foods. XII. Transition of organochloric pesticide residues in milk and dairy products produced in Hokkaido (Japan)

Yamamoto, I.; Hori, Y.; Nishizawa, M.; Shitara, Y.; Sato, Y.; Mori, K.; Tankawa, Y.

Report of the Hokkaido Institute of Public Health 28: 63-68

1978


Accession: 000592187

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Abstract
In 1971-1977, 66 samples of milk from 12 suppliers, 33 samples of butter from 7 manufacturers and 21 samples of modified dried milk from 3 manufacturers were taken from shops in 12 districts of Hokkaido and analysed for organochlorine residues. In milk, overall total HCH ranged from 1 to 38 mu g/kg, and mean concn. decreased from 12 to 3 mu g/kg in the 7-yr period. Overall total DDT concn. was trace-34 mu g/kg, and mean concn. decreased from 13 to 1 mu g/kg; dieldrin and heptachlor epoxide were found at 1-4 mu g/kg in 1971-1974 but only in trace amounts thereafter. In butter, mean HCH decreased from 182 to 76 mu g/kg, DDT from 176 to 26 mu g/kg, dieldrin from 20 to 6 mu g/kg and heptachlor epoxide from 26 to 11 mu g/kg between 1973 and 1977. In dried milk, overall concn. of HCH, DDT, dieldrin and heptachlor epoxide were resp. 2-33, 2-23, 0-2 and 0-4 mu g/kg with highest amounts in 1972 and lowest in 1975. Amounts of different isomers of HCH and DDT are also tabulated. The results for milk are compared with figures from the Japanese Ministry of Agriculture & Forestry.