[原著]Environmental Health Aspects of Organochlorine Insecticides Residued in Okinawa. Preliminary Report : Comparison of Epidemiological Background in Okinawa vs. Japan
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概要
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As the result of nation-wide epidemiological surveys made by the Ministry of Health and Welfare, strict administrative and legal actions were taken to prohibit production and utilization of the residual organochlorine insecticides in 1971 in Japan. Thereafter remarkable decrease of residual levels has been reported.^<1)> Based on the findings of the surveys, it was concluded that the contamination of human milk, beef and cow's milk with organochlorine insecticides especially with BHC was mainly due to the food chain, in short, tremendous amount of crude manufactured BHC, of which only gamma isomer has toxicity, was used for rice field and cows and catties were fed with these rice straw BHC contaminated, and then BHC had moved to milk and tissues which were finally taken by man.^<2)> Under the United States Administration from 1945 through May 1972, 0kinawa had been executed similar regulations on agricultural chemicals to Japan. The Government of the Ryukyu Islands had, therefore, made a partial amendment of the Agricultural Chemical Regulation Law concerning organochlorine insecticides in 1971 as well as in Japan without carrying out any area-wide surveys on actual residual levels of the insecticides. Since then it has been left unknown up to present. From the facts, however, that great quantities of organochlorine insecticides had been used for about twenty five years from 1945 through 1970 for agricultural and public health purposes, environmental pollution with the insecticides can be foreseen in great certainty in Okinawa too. As the actual levels of the insecticides residued in the environment of Okinawa will be reported in a seperate article, comparison of epidemiological background of the problems with Japan has made in this report.
- 琉球大学保健学部の論文
- 1979-00-00
琉球大学保健学部 | 論文
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