辐射防护 ›› 2019, Vol. 39 ›› Issue (6): 451-455.

• 辐射防护监测 •    下一篇

我国部分省份环境气溶胶中239+240Pu的测定

李鹏翔, 李周, 张静, 王瑞俊, 韩玉虎, 任晓娜   

  1. 中国辐射防护研究院, 太原 030006
  • 收稿日期:2019-07-22 出版日期:2019-11-20 发布日期:2020-05-15
  • 通讯作者: 通讯作者:任晓娜。E-mail:rxn-001@126.com
  • 作者简介:李鹏翔(1983—),女,2006年本科毕业于山西大学环境工程专业,2009年毕业于中国辐射防护研究院环境科学专业,获硕士学位,副研究员。E-mail: lipengxiang0214@163.com

Determination of 239+240Pu in environmental aerosols from some provinces in China

LI Pengxiang, LI Zhou, ZHANG Jing, WANG Ruijun, HAN Yuhu, REN Xiaona   

  1. China Institute for Radiation Protection, Taiyuan 030006
  • Received:2019-07-22 Online:2019-11-20 Published:2020-05-15

摘要: 采用阴离子交换树脂分离结合α谱仪测量的方法对我国7个省份环境气溶胶中239+240Pu含量进行测定,实验全程回收率为60.8%~94.6%,对气溶胶中239+240Pu的最小可探测限为0.008 μBq/m3。普通环境气溶胶采样量需要达到30 000 m3以上,在应急情况等特殊环境气溶胶采样量为10 000 m3可满足要求。一般情况下气溶胶中210Po含量比239+240Pu高4~6个数量级,在分析和测量中要关注210Po对239+240Pu测量的影响。测量结果显示,我国普通省份环境气溶胶中239+240Pu含量为0.009~0.099 μBq/m3,与美国、韩国和西班牙等国家空气气溶胶中的Pu含量处于同一水平。

关键词: 气溶胶, 示踪法, 239+240Pu, 210Po影响

Abstract: The contents of 239+240Pu in the environmental aerosols from seven provinces in China were analyzed using anion exchange resin separation and α spectrometer. Their total recovery rates were 60.8%-94.6%. The minimum detectable limit of 239+240Pu in aerosols was 0.008 μBq/m3. The sampling volume of aerosol in common environment needs more than 30 000 m3. In emergency and other special situations the aerosol sampling volume of 10 000 m3 will be enough. The 210Po content in aerosol is 4-6 orders of magnitude higher than 239+240Pu. In this analysis, we should pay attention to the influence of 210Po on 239+240Pu measurement. Our experimental results show that the contents of 239+240Pu in the common environmental aerosols in China are 0.009-0.099 μBq/m3, the Pu content in air aerosols in China is the same level as that in the United States, South Korea and Spain.

Key words: aerosol, tracer method, 239+240Pu, 210Po effect

中图分类号: 

  • X831