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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Skeletal fluorosis ： ウィキペディア英語版 Skeletal fluorosis Skeletal fluorosis is a bone disease caused by excessive accumulation of fluoride in the bones. In advanced cases, skeletal fluorosis causes pain and damage to bones and joints. ==Causes== Common causes of fluorosis include inhalation of fluoride dusts/fumes by workers in industry, use of coal as an indoor fuel source (a common practice in China), consumption of fluoride from drinking water (naturally occurring levels of fluoride in excess of the CDC-recommended safe levels), and consumption of fluoride from drinking tea, particularly brick tea. Skeletal fluorosis can be caused by cryolite (Na3AlF6, sodium hexafluoroaluminate), and the disease was first recognized among workers processing cryolite.〔(Skeletal fluorosis )〕 In India, the most common cause of fluorosis is fluoride-laden drinking water which is sourced as groundwater from deep-bore wells. Over half of groundwater sources in India have fluoride above recommended levels. Fluorosis can also occur as a result of volcanic activity.〔http://www.earth-prints.org/bitstream/2122/2590/1/D%27Alessandro_EnvTox06.pdf〕 The 1783 eruption of the Laki volcano in Iceland is estimated to have killed about 22% of the Icelandic population, and 60% of livestock, as a result of fluorosis and sulfur dioxide gases. The 1693 eruption of Hekla also led to fatalities of livestock under similar conditions.〔(Eruption History )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Skeletal fluorosis」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.