フツ素害およびその防除に関する研究

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タイトル別名
  • Studies on Fluorosis and Its Control
  • フッソガイ オヨビ ソノ ボウジョ ニ カンスル ケンキュウ 1
  • I. Fluorine Contents of Teeth, Bones, Water, and Feedstuffs
  • I. 骨,歯および飼料のフツ素含量

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1. Relations between the fluorine contents of the animal body, drinking water, and feedstuffs, and chronic fluorine poisoning were studied by determining the fluorine contents in them.<br>2. It was found that fluorine contents were higher in bones than in teeth, and in cattle than in horses.<br>3. The fluorine contents of teeth, bones, and hairs of cattle raised in hi h-fluorine areas were 2 to 10 times, 2 to 10 times, and 2 to 5 times, respectively, as high as those in low-fluorine areas. Thsre was no difference in fluorine content among the blood, liver, muscles, and milk.<br>4. In high-fluorine areas, such as the Aso volcano region, the fluorine contents of bones or teeth of domestic animals with mottled teeth were 2 to 5 times as high as those of domestic animals without mottled teeth.<br>5. The fluorine content of drinking water in high-fluorine areas was 5 to 40 times as high as that in low-fluorine areas, but there was no difference in fluorine content with regard to feedstuffs.<br>6. When fluorine was administered to rats and rabbits, the fluorine contents of bones and teeth were 5 to 8 times, and those of hairs, blood, heart, spleen, brain, and muscles were about 2 times as high as those in normal animals. Thre was no difference, however, in fluorine content with regard to the liver, kidney, and lung.

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