辐射防护 ›› 2016, Vol. 36 ›› Issue (4): 249-251.

• 经验交流 • 上一篇    下一篇

山西省晋中某地地下水总放射性比例异常的原因分析

杜俊玫, 程琳   

  1. 山西省辐射环境监督站,太原 030051
  • 收稿日期:2015-05-22 出版日期:2016-07-20 发布日期:2021-11-15
  • 作者简介:杜俊玫(1989—),女,2010年毕业于中北大学特种能源工程与烟火技术专业,2013年毕业于中北大学应用化学专业,获硕士学位,助理工程师。E-mail:dujunmei89@126.com

Investigation for total radioactivity abnormal ratio in underground water of Jinzhong city of Shanxi province

Du Junmei , Cheng Lin   

  1. Shanxi Supervision Station of Radiation Environment,Taiyuan 030051
  • Received:2015-05-22 Online:2016-07-20 Published:2021-11-15

摘要: 选取山西省5个水体采样点,于2013—2014年平水期、枯水期分别进行采样,并分析测定其总α、总β放射性水平,同时测定5个点地下水的铀、钍、镭、钾等核素的活度浓度。测定结果表明有一个采样点——晋中采样点地下水总α放射性水平始终大于总β放射性水平。进一步分析该点水样的pH值及碳酸根离子的含量,发现晋中水样的pH值为7.79,碳酸根离子的含量为299.9 mg/L。该点弱碱性环境及较高的碳酸根离子含量有助于碳酸铀酰络合物的形成,使水样中的铀含量增高,且其钾含量又偏低,造成晋中采样点地下水总α放射性水平始终大于总β放射性水平。

关键词: 总α放射性, 总β放射性, 铀,

Abstract: Investigation of gross α and gross β activity in water from five sampling sites of Shanxi province were made in common water period and dry season in 2013 and 2014. The activity concentration of Uranium, Thorium, Radium and Potassium were also determined. The results confirmed that gross α activity of underground water in Jinzhong were all higher than gross β activity. Moreover, it was significantly higher than the limit of Sanitary standard for drinking water. The pH of groundwater in Jinzhong was 7.79 and its CO2-3content was 299.9 mg/L. Weak alkaline enviroment and higher CO2- 3content are helpful to form Uranium complex in water which can cause the increase of Uranium concentration. Lower Potassium concentration and higher Uranium concentration caused gross α of groundwater in Jinzhong city were all higher than gross β.

Key words: gross α, gross β, Uranium, Potassium

中图分类号: 

  • X832