摘要
目的以国家辐射监测网监测数据为基础,从空气吸收剂量率、空气、水、土壤等方面对2011—2015年全国环境天然辐射水平进行分析和总结。方法通过查阅相关资料、整理、归类和总结了2011—2015年我国空气、水和土壤中的天然辐射水平监测数据。结果2011—2015年,自动站空气吸收剂量率年均值范围为88~92 nGy/h,累积剂量测得的空气吸收剂量率年均值范围为97~99 nGy/h,空气、水和土壤中天然放射性核素活度浓度均在日常涨落范围内。结论自动站连续空气吸收剂量率、地级及以上城市累积剂量测得的空气吸收剂量率处于当地天然本底涨落范围内,气溶胶和沉降物中天然放射性核素活度浓度处于本底水平,江河水、湖(库)水、海水及土壤中天然放射性核素活度浓度在日常涨落范围内,且与1983—1990年全国环境天然放射性水平调查结果处于同一水平。
Objective Based on the monitoring data of the national radiation monitoring network,the natural radiation levels of the country from 2011 to 2015 are analyzed and summarized from the aspects of real-time ambient absorbed dose rate,air,water and soil,etc.Methods Natural radiation monitoring data of air,water,and soil in China from 2011 to 2015 are reviewed,sorted out,classified and summarized.Results From 2011 to 2015,the annual average range of real-time ambient absorbed dose rate is 88~92 nGy/h,and the annual average range of cumulative dose rate is 97~99 nGy/h.The activity concentration of natural radionuclides in air,water and soil is in the daily fluctuation range.Conclusion The real-time ambient absorbed dose rate and cumulative dose rate are in the local natural fluctuation range.The activity concentration of natural radionuclides in aerosol and fallout is at the background level.The activity concentration of natural radionuclides in river water,lake(reservoir)water,sea water and soil is in the daily fluctuation range,and is also at the same level as the national environmental natural radioactivity level survey results from 1983 to 1990.
作者
徐茗荟
孙亚敏
王晓芬
王蕾
XU Minghui;SUN Yamin;WANG Xiaofen;WANG Lei(Zhejiang Province Radiation Environmental Monitoring Center,Key Laboratory of Radiation Environmental Safety Monitoring(Zhejiang Province),Hangzhou 310012 China)
出处
《中国辐射卫生》
2020年第5期555-558,566,共5页
Chinese Journal of Radiological Health
关键词
天然辐射
监测
水平
现状
Natural Radiation
Monitoring
Level
Current Status
