陶磁器生産地の大気汚染調査II : 陶磁器原料中のフッ素とアルカリろ紙法による大気中のフッ素について

概要

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It is reported that fluorine is emitted to the atmosphere from various industrial process such as the manufacturing of aluminium, clay bricks, phosphate fertilizers and steel. Fluorine concentration in air of china manufacturing area and in raw materials of china were measured. Alkaline paper method was applied for measuring fluorine in air, and modified distillation method was used for fluorine in raw materials of china. From the results of this investigation, it was shown that fluorine content in green body and glaze of china materials were 3.4-16.3mg/100g, and the content in manufacturing were less than 3mg/100g. More than 90% of fluorine in these raw materials was volatilized by firing in the process of china manufacturing, therefore it was supposed that measurable amounts of fluorine was emitted to the atmosphere in china manufacturing area. Fluorine values in the air in china manufacturing area were 3.1μg/d/100cm^2 paper, and these vulues were 4 times as high as the values in Gifu city-commercial city. In the nearest observation point to china factories, the values were 20 times higher than to that in Gifu city. From these results, it was concluded that china manufacturing was the main source of fluorine emission.
公益社団法人日本薬学会の論文
1967-06-30