【摘要】 报道１９９０—１９９４年间对辽宁省５０个自来水公司及４０个厂矿自备水样品总α、总β放射性的调查结果。其总α范围分别在０．９×１０－２－１６．３×１０－２、０．３×１０－２－２１．６×１０－２Ｂｑ·Ｌ－１，均值分别为０．０４６、０．０６５Ｂｑ·Ｌ－１，超标率分别为８％。１５％。总β范围在０．０８—１．０７Ｂｑ·Ｌ－１，超标样品很少。研究表明，天然放射性核素是饮水中总α的主要贡献者，其中尤以天然铀贡献为最大，约占总α的４３％。更多还原

【Abstract】 The detection of total α and β radioactivities inthe water samples collected from 50 waterworkscompanies and 40 self-supported water supplysystems for factories or mines in the LiaoningProvince was carried out in 1990 to 1994 and theresults were reported. It was found that the totala radioactivity was in the ranges of 0. 9 × 10-2 16. 3 × 10-2 and 0. 3 × 10-2 - 21. 6 × 10-2 Bq.L-1, with the averages of 0. 046 and 0. 065 Bq.L-1 which were 8% and 15% over the nationalstandards, respectively in the above two corresponding cases. The total β radioactivity wasfound in the range of 0. 08- 1. 07 Bq. L-1, withless water samples which were exceeding the national standards. The results show that the naturaf radioactive nuclides were the major contributors to the total a radioactivity in the drinkingwater and the natural uranium compounds madethe largest contribution by about 43% of the totala radioactivity.更多还原