辐射防护通讯 ›› 2018, Vol. 38 ›› Issue (2): 20-25.

• 经验交流 • 上一篇    下一篇

江苏省溧阳市放射性水平调查

林建勇, 王啸   

  1. 林建勇 (江苏省核工业二七二地质大队, 南京, 210003)
    王啸 (天津华北地质勘查局核工业二四七大队, 宝坻, 301800)
  • 收稿日期:2018-02-01 出版日期:2018-04-15 发布日期:2020-07-29
  • 作者简介:林建勇(1968—), 男, 1990年毕业于华东地质学院(现东华理工大学)物探系, 学士;高级工程师。  

Radioactivity Investigation in Liyang City, Jiangsu Province

Lin Jingyong, Wang Xiao   

  1. Lin Jingyong(Nuclear Industry Geological Brigade No. 272, Nanjing, Jiangsu, 210003)
    Wang Xiao(Nuclear Industry Geological Brigade No. 247, Baodi, Tianjin, 301800)
  • Received:2018-02-01 Online:2018-04-15 Published:2020-07-29

摘要: 本文给出了2008—2009年江苏省溧阳市地表γ辐射剂量率、大气氡浓度、土壤和岩石中放射性核素水平、水中放射性核素水平的调查测量结果。调查结果表明, 溧阳市地表γ辐射剂量率平均为78 nGy/h, 溧阳火山盆地的外缘及庙西花岗岩接触带外延γ辐射剂量率较高(最高800 nGy/h);大气氡浓度平均为14.5 Bq/m3;水中238U、232Th、226Ra、40K和总α、总β水平分别为6 mBq/L、0.085 mBq/L、17.1 mBq/L、212 mBq/L、0.028 Bq/L和0.146 Bq/L。该地区公众人均年本底剂量为1.175 mSv/a。

关键词: 溧阳市, 天然放射性水平, 辐射剂量率, 放射性核素

Abstract: The measurement results of surface gamma radiation dose rate, atmospheric radonconcentration, and natural radionuclide contents in soils/rocks and water in Liyang City, Jiangsu Province, are presented. It indicates that the surface gamma radiation dose rate averages 78 nGy/h, and is above normal in Liyang volcanic basin periphery and the outer reaches of Miaoxi granite contact zone, with a maximum of 800 nGy/h. The mean concentration of atmospheric radon is 14.5 Bq/m3. Theaverage content of natural radionuclide contents in soils/rocks is 40K>226Ra>238U>232Th, and 6, 0.085, 17.1 and 212mBq/L in water, respectively. The total α, total β level in water is 0.028 and0.146 Bq/L. The public dose arising from natural background is 1.175 mSv/aper capita in the region.

Key words: Liyang city, Natural radioactivity, Radiation dose rate, Radionuclide

中图分类号: 

  • X837