高放废液处理过程中总β放射性活度的分析  

ANALYSIS OF GROSS BETA ACTIVITY IN THE TRPO PROCESS

作　　者：梁俊福[1] 刘秀琴[1] 郭一飞[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《核化学与放射化学》1998年第4期228-233,共6页Journal of Nuclear and Radiochemistry

摘　　要：研究了高放废液处理过程中总β放射性活度的分析方法。用液体闪烁计数法甄别α和γ射线的干扰，测量水相和有机相总β放射性的计数率。把β放射性核素分成４组，用液闪仪和Ｇｅ（Ｌｉ）γ谱仪分析各组样品和各种淬灭条件下的等效效率和权重因子，通过效率等效法计算得到样品的总β放射性活度。分析了ＴＲＰＯ处理生产堆高放废液流程中各液流的总β放射性活度。总β测量的不确定度小于５％。Analysis of gross beta activity in the TRPO process for treating high level liquid waste is studied.The gross beta activity in aqueous or organic phase samples are determined by liquid scintillation analyzer.Interference with determination of α and γ to β is discriminated.β nuclides are divided into four groups based on β maximum energy.Equivalent efficiency and weigh factor of each group are analyzed by liquid scintillation analyzer and Ge(Li) γ spectrometer.Gross β activities of the samples are calculated by equivalent efficiency method.The method is applied to analysis of gross β activity in the TRPO process with satisfactory results.

关 键 词：Β放射性 液体闪烁计数 高放废液处理 效率等效 

分 类 号：TL941.1[核科学技术—辐射防护及环境保护]