摘要
目的了解苏州市区各种水体中总α、总β放射性本底水平及动态变化,为开展环境辐射评价提供依据.方法根据自然和社会等因素选择水体种类和采样点,采用饱和厚样法和中等厚度相对测量法分别测定样品的总α、总β放射性.结果样品的总α放射性水平为3.56×10-2～8.89×10-2Bq/L,各种水体间差异无显著性;总β放射性水平为0.78×10-1～3.75×10-1Bq/L,各种水体间差异有显著性.结论苏州市区水体未受到人工放射性核素的污染.
Objective To investigate total alpha and beta radioactivity levels of water bodies in Suzhou and find potential radioactive contamination in time. Methods The types of water body and sampling spots were selected in accordance with the nature and social factors. Saturation thickness method and relative activity method of medium thickness were used in measuring the total radioactivity of water samples. Results Total alpha radioactivity levels of water bodies had no significant difference, but the differences of total beta radioactivity levels were significant. Conclusions The radioactivity levels of water bodies in Suzhou are within normal natural background. The environment of Suzhou is not contaminated by artificial radioactive nuclide.
出处
《工业卫生与职业病》
CAS
CSCD
北大核心
2005年第5期301-304,共4页
Industrial Health and Occupational Diseases
关键词
苏州市区
水体
总α
总β
Suzhou city
Water body
Total alpha
Total beta
