广西土壤中天然放射性核素含量调查及外照射水平估算研究  

Investigation of Natural Radionuclide Content in Soil and Estimation of External Radiation Level in Guangxi

作　　者：林明媚 彭崇 周花珑 何贤文 杨艳 王磊 邓旋 Lin Mingmei;Peng Chong;Zhou Hualong;He Xianwen;Yang Yan;Wang Lei;Deng Xuan(Radiation Environment Supervision and Management Station of Guangxi Zhuang Autonomous Region,Nanning 530222,China)

机构地区：[1]广西壮族自治区辐射环境监督管理站,广西南宁530222

出　　处：《广东化工》2021年第12期71-72,86,共3页Guangdong Chemical Industry

基　　金：北海市科技计划项目(合同编号:北科合201995035)。

摘　　要：土壤放射性核素含量调查是环境监测领域的研究热点。文章采用高纯锗γ谱仪,选取广西12个地市土壤中天然放射性核素含量开展了长达九年(2011~2019年)的调查研究。结果表明,12个地市土壤中天然放射性核素含量与1987~1989年“广西土壤中天然放射性核素含量调查”结果保持一致;通过外照射指数与等效镭浓度两个方面对这12个地市环境中γ辐射水平进行评价,评价结果为12个地市外照射指数均小于国标限值1、等效镭浓度均低于建议最大容许值370 Bq/kg,因此,调查区域天然外照射不会对人居环境产生影响,属于安全辐射范畴。The investigation of soil radionuclide content is a research hotspot in the field of environmental monitoring.The article uses a high-purity germanium gamma spectrometer to select the content of natural radionuclides in the soil of 12 prefectures and cities in Guangxi to conduct a nine-year(2011~2019)investigation and study.The results show that the content of natural radionuclides in the soil of 12 prefectures and cities is consistent with the results of the 1987~1989“Survey of the Contents of Natural Radionuclides in Soils in Guangxi”.Evaluate the gamma radiation level in the environment of these 12 prefectures and cities through two aspects:external exposure index and equivalent radium concentration.The evaluation result is that the external exposure index of 12 prefectures and cities is lower than the national standard limit 1,and the equivalent radium concentration is lower than the recommended maximum allowable value of 370 Bq/kg.Therefore,the natural external exposure in the survey area will not have an impact on the human settlement environment and belongs to the category of safe radiation.

关 键 词：土壤 天然放射性核素 外照射指数 等效镭浓度 评价 

分 类 号：TQ[化学工程]