有機水銀化合物の毒性はいつ頃から明らかになったのか？　　‐水俣病原因確定の遅れと文献検索‐

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  • Bibliographical Study of the Toxicity of Organic Mercury Compounds -In Relation to the Identification of Causal Substance of Minamata Disease-
  • 有機水銀化合物の毒性はいつ頃から明らかになったのか?--水俣病原因確定の遅れと文献検索
  • ユウキ スイギン カゴウブツ ノ ドクセイ ワ イツ ゴロ カラ アキラカ ニ ナッタ ノ カ ミナマタビョウ ゲンイン カクテイ ノ オクレ ト ブンケン ケンサク
  • —In Relation to the Identification of Causal Substance of Minamata Disease—
  • ―水俣病原因確定の遅れと文献検索―

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Objectives: The aim of this study is to correct the misunderstanding that the toxicity of organic mercury compounds is unknown at the time of the outbreak of Minamata disease (May 1, 1956).<br> Results and Discussion: Two case reports of organic mercury (methylmercury) intoxication were published already in 1865 and 1866. The conversion of inorganic mercury added in acetoaldehyde synthesis was already pointed out in 1921. In 1930 several cases of organic mercury poisoning among workers engaged in acetoaldehyde production were reported. Many reports on not only in occupational exposure but a oral exposure via the ingestion of flour made from grains treated with organic mercurials were available at the time of the outbreak of Minamata disease (May 1, 1956). These reports pointed out the toxic effects of organic mercury on the central nervous system, and indicated cleary that the causal substance of Minamata disease must be the organic mercury compounds (methylmercury) from the Chisso plant. The identification of methylmercury as the causal substance by the authority was presented in 1968 when acetoaldehyde production in the Chisso plant was closed. Most of these reports except that of (Hunter et al.) were not referred to in the study of Minamata disease . Inadequate referrencing should be pointed out.<br> Conclusion: Several reports indicated that the causal substance of Minamata disease must be methylmercury from the Chisso Plant. However, most of these reports were not referred to during the study of Minamata disease. Inadequate referrencing of literatures should be pointed out.<br>

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