南水北调东线山东段通水前主要湖区水放射性水平  

The Radioactivity Levels in the Main Lakes of Shandong Basin in East Line of South to North Water Diversion

作　　者：曹敬丽[1] 许家昂[1] 陈英民[1] 朱建国[1] 宋钢[1] 卢峰[1] 袁明[1] 邓大平[1] 

机构地区：[1]山东省医学科学院放射医学研究所,山东济南250062

出　　处：《中国辐射卫生》2006年第2期142-143,共2页Chinese Journal of Radiological Health

基　　金：山东省医药卫生资助项目(No.200315)

摘　　要：目的调查南水北调东线山东段通水前沿线主要湖区水中的放射性水平。方法总α、总β采用饱和厚度相对测量法,226Ra采用射气法,137Cs、60Co、238U、232Th、40K用高纯锗γ谱仪测量,90Sr用硫酸盐EDTA络合沉淀法。结果总α、总β活度浓度均值分别为9.69×10-2、2.82×10-1Bq·L-1;90Sr、137Cs活度浓度均值分别为5.50×10-3、7.60×10-4Bq·L-1,60Co未测出;238U、226Ra、232Th和40K的活度浓度均值分别为1.37×10-2、6.48×10-3、13.95×10-4和1.21×10-1Bq·L-1。结论流经位于微山湖东侧郗山村的河水中总α、238U的放射性水平偏高,南水北调山东段主要湖区水中的放射性总体处在本底水平。Objective To study the radioactivity levels in the main lakes of Shandong basin in east line of South to North water diversion. Methods The Gross-alpha and gross-beta activities were determined by using alpha-/beta-discrimination liquid scintillation counting （alpha-/beta-LSC） by direct measurement of the dried resin after extraction;^236Ra using NIST radon emanation standards; ^137Cs,^60Co,^238U,^232Th,^40K with gamma-ray spectrometry using a HPGe-γ detector;^90Sr using general deposition by sulphate and EDTA. Results The average levels of gross-alpha, gross-beta are 9.69 × 10^-2 2.82 ×10^-1 Bq· L^-1 respectively. Tne average levels of ^90Sr,^137 Cs are 5.50 ×10^-3,7.60 × 10^-4 Bq·L^-1 rspectively. There is no counts in detecting ^60Co by using the HPGe-γ detector. The average levels of ^238U,226Ra,^232Th and ^40K are 1.37×10^-2 ,6.48 ×10^-3 ,13.95×10^-4 and 1.21×10^-1 Bq·L^-1 respectively. Conclusion The levels of gross-alpha and ^238U in Chishan village are higher than the average levels in the main lakes of Shandong basin. The average radioactive levels of others in the main lakes of S .handong basin are about to the background levels.

关 键 词：南水北调 山东 湖水 放射性水平 

分 类 号：R145[医药卫生—公共卫生与预防医学]