日本衛生学雑誌
Online ISSN : 1882-6482
Print ISSN : 0021-5082
ISSN-L : 0021-5082
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情報無視が続いた水俣病原因解明の歴史
石原 信夫
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ジャーナル フリー

2014 年 69 巻 1 号 p. 75-79

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The first reports of methylmercury intoxication appeared in 1865 and 1866. These reports had sensational effects in European countries, and were introduced not only in journals but also in newspapers. These two reports were referable in Japan at the latest in 1927. The formation of organic mercury in the production of acetoaldehyde was also referable in 1906 in Japan. In 1931 (one year before the start of acetoaldehyde production in Minamata) these important reports cited above were referable in Kumamoto University, and there were warnings about the toxicity of organic mercury and environmental pollution prior to the start of acetoaldehyde production. However, not only the plant, authorities (Ministry of Welfare), and Kumamoto Prefectural Office, but also the scientists completely ignored these reports. Waste was dumped into the environment without any treatment. Serious pollution of the environment by organic mercury started, which resulted in the outbreak of Minamata disease (=methylmercury intoxication).

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