著者
丸山 誠史 服部 健太郎 平田 岳史
出版者
日本地球化学会
雑誌
地球化学 (ISSN:03864073)
巻号頁・発行日
vol.48, no.3, pp.187-199, 2014-09-25 (Released:2014-10-10)
参考文献数
41

Concentrations of uranium and thorium in commercial bottled mineral waters (81 domestic and 11 foreign products) have been analyzed using ICP-MS. Domestic bottled mineral waters exhibit very wide range of the uranium concentrations (0.1–3300 ng/L). However uranium concentrations of most samples were below 100 ng/L. There is no obvious correlation between the values of hardness and the uranium concentrations of the domestic bottled mineral waters. The uranium concentrations of foreign bottled mineral waters tended to be much higher than those of domestic ones (up to 4000 ng/L), and the values of hardness correlate roughly with the uranium concentration. It may be due to interactions between limestone and groundwater. Thorium concentrations of both domestic and foreign bottled mineral waters are typically less than 3.0 ng/L. Concentrations of uranium and thorium in bottled mineral waters were greatly lower than provisional guideline values defined by WHO. Therefore, it can be considered that there is no health risk chemically/radioactively induced by natural uranium and thorium in commercial mineral waters currently available in Japan, especially in Kyoto City.

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河川水、ミネラルウオーターのウラン(種にU-238)とトリウム(Th-232)の濃度はこれ https://t.co/zMJsjRahfs それに比放射能をかけてBq/Lで計算する。これは、日本人が長年、代々、自然から摂り続けた水。これと比較するとSr-90のなんて、カスのカス
ミネラルウォーターのウラン・トリウム濃度 https://t.co/SuA4oXIyA8 本研究で用いられたミネラルウォーターのウラン濃度は,国内産,海外産ともに殆どが水道法監視項目の暫定値(2 µg/L)を下回っていた 海外産製品のウラン濃度は国内産製品よりも高濃度かつ広範囲に

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