摘要
采用厚源法测定地表水、废水中总α放射性,并通过6家实验室间比对验证厚源法的重复性、再现性和准确性。结果表明:方法探测下限不高于0.043Bq/L。对总α放射性水平为0.046Bq/L的地表水和25.6Bq/L的废水样品重复性限为0.021Bq/L和5.29Bq/L,再现性限为0.022Bq/L和8.69Bq/L,加标回收率最终值为(104±17.6)%和(103±11.6)%。
Gross alpha activity in surface water and waste water was determined by thick source method.The repeatability,reproducibility and accuracy of the method were verified by six laboratories.The results showed the method lower detection limit was not more than 0.043 Bq/L.For the surface water with the gross alpha activity of 0.046 Bq/L and the waste water with the gross alpha activity of 25.6 Bq/L,the repeatability limits were 0.021 Bq/L and 5.29 Bq/L,the reproducibility limits were 0.022 Bq/L and 8.69 Bq/L,the end value of recoveries were(104±17.6)%and(103±11.6)%,respectively.
作者
王利华
陆照
沈乐园
WANG Li-hua;LU Zhao;SHEN Le-yuan(Jiangsu Nuclear and Radiation Safety Supervision and Management Center,Nanjing, Jiangsu 210019,China;Nanjing No.29 Junior High School,Nanjing,Jiangsu 210036,China)
出处
《环境监测管理与技术》
CSCD
2019年第4期43-45,56,共4页
The Administration and Technique of Environmental Monitoring
基金
国家环境保护标准制修订基金资助项目(1207.2)
关键词
总α放射性
厚源法
地表水
废水
Gross alpha activity
Thick source method
Surface water
Wastewater
