苏州市水中放射性水平调查及其质量评价  

Evaluation on radioactive level and quality of aquatic environment in Suzhou

作　　者：俞荣生[1] 涂彧[2] 张瑞菊[2] 

机构地区：[1]苏州市疾病预防控制中心,215004 [2]苏州大学放射医学与公共卫生学院

出　　处：《中华放射医学与防护杂志》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）

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.

关 键 词：水源 总α 总β 质量评价 

分 类 号：X[环境科学与工程] R1[医药卫生—公共卫生与预防医学]