摘要
对广东下庄铀矿田中洞地区土壤氡活度浓度进行了研究，并利用大地一大气氡交换模型计算了距地面1m高处空气中的氡活度浓度值。研究结果表明，该地区土壤氡活度浓度为35～70000Bq／m^3，平均为2019．4Bq／m^3；估算大气氡活度浓度为27．0～167．7Bq／m^3，平均值为56．22Bq／m^3；其所致年有效剂量为3．81mSv，高于我国大气中氡对公众所致年有效剂量0．88mSv约3倍。
FD-3017 RaA instrument was used in the of zhongdong area in Xiazhuang uranium ore field, research to measure the radon concentration in soil Guangdong,and the radon concentration in the air 1 m above ground surface was calculated using the earth-atmosphere radon exchange model. The research results indicate that the radon concentration in soil is in the range of 35-70 000 Bq/m^3 , the average value is 2 019.4 Bq/m^3 ; the radon concentration in air is in the range of 27.0-167.7 Bq/m^3 , the average value is 56.22 Bq/m^3. The annual effective dose caused by radon is 3.81 mSv, about 3 times higher than that in the whole China which is 0.88 mSv.
出处
《铀矿冶》
CAS
北大核心
2008年第1期40-43,共4页
Uranium Mining and Metallurgy
基金
江西省教育厅课题资助(赣教技字[2007]238号)
教育部重点实验室开放课题资助(060618)
关键词
氡气测量
氡活度浓度
年有效剂量
radon gas survey
Rn concentration
annual effective dose
