摘要
目的对苏州市水源的放射性水平进行调查和评价。方法采用BH1216型低本地α、β放射性测量装置，用^241Am和优质纯KCl分别作为总α、总β放射性测量的标准源，采用中等厚度相对测量法测定样品中的总α、总口放射性活度。结果苏州市各种水样的总α放射性水平为（2．62±0．17）×10^-2～（8．48±2．80）×10^-2 Bq／L；总β放射性水平为（0．77±0．47）×10^-1～（3．75±0．26）×10^-1 Bq／L；β/α的平均值为1．6—7．2。结论苏州市水源没有受到人工放射性核素的污染，其水源水质量均为优良水平；所有水源中浅井水的总放射性水平最高。
Objective To assess the quality grade of water source in Suzhou in terms of the radioactive level. Methods The levels of total α and total β activities in samples of water were detected by relative measurement with medium thickness using model BH 1216 low level α and β detector. ^241Am and pure potassium chloride were used as reference radioactive sources. Results Among all samples collected, the measured levels varied from （2.62±0.17）×10^-2～（8.48±2.80）×10^-2 Bq/L for total α and （0.77±0.47）×10^-1～（3.75±0.26）×10^-1 Bq/L for total β, the average levels of β/α were from 1.6 to 7.2. Conclusions The radioactivity level of water source in Suzhou was within the natural background range, free from contamination of artificial radioactive nuclides, which was regarded as good in quality in terms of radioactive level. It is shown that the radioactivity of well water was highest among all investigated water sources.
出处
《中华放射医学与防护杂志》
CAS
CSCD
北大核心
2007年第4期392-394,共3页
Chinese Journal of Radiological Medicine and Protection
基金
2003年苏州市科技计划（社会发展）基金资助项目（SZD0333）
关键词
水源
总α
总β
质量评价
Water sources
Total a
Total β
Quality assessment
