世界核地质科学2025，Vol.42Issue(3)：668-675,8.DOI:10.3969/j.issn.1672-0636.2025.03.017
宁夏银川地表γ辐射空气吸收剂量率分析及评价
Analysis and evaluation of airborne absorbed dose rate from terrestrial gamma radiation in Yinchuan,Ningxia
摘要
Abstract
In order to understand the current situation of the air absorption dose rate level from terrestrial γ-radiation in Yinchuan,master the distribution pattern of surface γ-radiation,evaluate the external exposure level of residents,gradually establish and improve the environmental radiation background database of the whole city of Yinchuan,Ningxia,and provide technical support for ensuring the health and safety of the public and the development of urban construction,and provide a basis for government decision-making,Evenly measuring grid method was used to cover the measurement area of the air absorption dose rate of surface γ-radiation in Yinchuan city.The dose rate levels of different administrative regions,different environmental conditions,different soils and materials in Yinchuan city were collected and summarized,the effective dose received by residents was estimated.The survey results indicate that the average terrestrial gamma radiation absorbed dose rate in Yinchuan(after deducting cosmic ray contributions)is 48.67 nGy·h-1,primarily attributed to 40K.This value closely aligns with the regional average in Ningxia Hui Autonomous Region but is significantly lower than the national average.The resultant annual effective dose to the public is calculated as 0.30 mSv,which is lower than both the per capita annual dose from terrestrial radiation in China(0.46 mSv)and the outdoor gamma radiation dose in Ningxia(0.55 mSv).关键词
银川市/γ辐射空气吸收剂量率水平/年有效剂量Key words
Yinchuan/level of air absorption dose rate of γ-radiation/annual effective dose分类
核科学引用本文复制引用
王赕,马杰,窦志娟,李佐有,李园..宁夏银川地表γ辐射空气吸收剂量率分析及评价[J].世界核地质科学,2025,42(3):668-675,8.基金项目
宁夏自然科学基金项目(编号:2021AAC03475)资助 Supported by Natural Science Foundation of Ningxia Hui Autonomous Region(No.2021AAC03475) （编号:2021AAC03475）
