【摘要】 本文对采自珠海市16个地下水样品中的放射性元素及其它元素进行了分析,结果发现花岗岩基岩地下水中氡及其它放射性元素的浓度高,氡的平均值为1638Bq·l^-1,最高达3900Bq·l^-1.如果家庭中使用这样的水,其室内氡浓度将会大幅度增加. 因此,建议在使用高氡浓度的地下水作为家庭生活用水时,应先用活性炭等物质进行氡吸附处理更多还原

【Abstract】 16 samples of groundwater from Zhuhai have been taken and anslyzed for content of U, Th, Ra, Rn, togather with a wide variety of minor and major species. High Rn concentrations are obtained in granite bedrock groundwaters, median value is 1638 Bq·l-1, while maximum values is 3900Bq·l-1. If these high 222Rn concentration groudwaters are used in dwelling, they would be a major surce of indoor 222Rn. It is suggested that high 222Rn concentration groundwaters must be handled with activated carbon (and so on) before they are used in home.更多还原