ミネラルウォーター中のウラン濃度

抄録

Uranium concentrations in some natural mineral waters sold in Japan (domestic 20 and foreign 9) were measured by ICP-MS. The U concentrations were found in a wide range, differing by a factor of 40000, about 0.4-1.6×10⁴ng/l. The values over guidance level (2μg/1) were observed in two domestic samples and one foreign one. Occurrence of such a high U concentration indicates the need of further survey of U concentration of mineral water to consider uranium intake.