核辐射应急情况下放射性核素的γ能谱快速分析方法  

Rapid analysis methods of radionuclides by usingγ-Spectroscopy in nuclear radiation emergency

作　　者：李文红[1] 拓飞[1] 周强[1] 杨宝路 李则书 刘玉龙[2] LI Wenhong;TUO Fei;ZHOU Qiang;YANG Baolu;LI Zeshu;LIU Yulong(National Institute for Radiological Protection,China CDC,Key Laboratory of Radiological Protection and Nuclear Emergency,Beijing 100088 China;The Second Affiliated Hospital of Soochow University)

机构地区：[1]中国疾病预防控制中心辐射防护与核安全医学所辐射防护与核应急中国疾病预防控制中心重点实验室,北京100088 [2]苏州大学附属第二医院

出　　处：《中国辐射卫生》2019年第6期684-687,共4页Chinese Journal of Radiological Health

基　　金：国家科技支撑计划(2013BAK03B05);中国医学科学院医学与健康科技创新工程项目(2017-I2M-1-016)。

摘　　要：目的建立核辐射事件发生后应急情况下环境样品中放射性核素的γ能谱快速分析方法。方法通过调研国内外核辐射应急标准,并结合我国实际,制定了在核辐射事件发生后应急情况下,对环境样品样品的采集、预处理、γ能谱测量、出具结果报告的流程。结果采用2 L马林杯样品盒,在测量10 min的情况下,131 I和137Cs的最小可探测活度浓度在102(Bq/kg)量级。结论建立了一种测量核辐射应急情况下放射性核素的γ能谱快速分析方法,满足核应急情况下对OIL6中的要求。Objective To establish rapid analysis methods of radionuclides in environmental samples by using gamma spectrometry after nuclear radiation events.Methods By investigating the domestic and foreign standards of nuclear radiation emergency responses,and combining with China's actual conditions,the procedures for environmental sample collection,pretreatment,radionuclide measurement by gamma spectroscopy and result report are suggested.Results By using a 2 L Marin cup sample box,the minimum detectable activity concentrations of 131 I and 137Cs in the order of 102(Bq/kg)could be achieved under the condition of 10 minute measurement.Conclusion A rapid analysis method ofγ-ray spectrometry for measurement of radionuclides in nuclear radiation emergency was established in the work,which can meet the requirements of OIL6 levels during nuclear emergency.

关 键 词：Γ能谱 放射性活度浓度 预置操作干预水平 

分 类 号：TL817[核科学技术—核技术及应用]