雄安新区环境中^(90) Sr、^(137) Cs放射性水平调查评估

Investigation and Evaluation on Radioactivity Level of ^(90 )Sr and ^(137)Cs in Environmental Media in Xiong'an New District

对雄安新区范围内环境介质中^(90)Sr、^(137)Cs放射性水平进行了调查和评估.分别采集了水体、土壤、沉降物、空气和生物等样品,利用低本底α/β计数器测量试样中^(90)Sr,高纯锗γ谱仪测量试样中^(137)Cs.检测结果表明,雄安新区范围内环境介质中^(90)Sr和^(137)Cs放射性水平未见异常,处于全国辐射环境的本底范围内.

From 2018 to 2019,the radioactivity levels of^(90)Sr and^(137)Cs in the environmental media within the Xiong'an New District were investigated and studied.Water,soil,sediment,air,and biological samples were collected.The result indicated that the activities of^(90)Sr and^(137)Cs in environmental water are(0.41~7.27)and(0.42~1.62)mBq/L,and the activities of^(90)Sr and^(137)Cs in soil are(0.21~2.4)and(0~7.86)Bq/kg.The activity range of^(90)Sr and^(137)Cs in biological samples is(0.003~0.202),(0.002~0.026)Bq/kg·(fresh).The data showed that the radioactivity levels of^(90)Sr and^(137)Cs in the environmental media within the Xiong'an New District were not abnormal,and were within the background of the national radiation environment.