北京市生活饮用水放射性水平调查分析  

Investigation and analysis of radioactivity level of drinking water in Beijing

作　　者：孙亚茹[1] 武云云[2] 万玲[1] 于久愿[3] 宋亚明[4] 汪会文[5] 曹蕾[6] 马永忠[1] 

机构地区：[1]北京市疾病预防控制中心/北京市预防医学研究中心,100013 [2]中国疾病预防控制中心辐射防护与核安全医学所 [3]北京市海淀区疾病预防控制中心 [4]北京市密云县疾病预防控制中心 [5]北京市延庆县疾病预防控制中心 [6]北京市通州区疾病预防控制中心

出　　处：《首都公共卫生》2014年第4期155-157,共3页Capital Journal of Public Health

摘　　要：目的调查北京市生活饮用水的放射性水平,以更好地开展本地区饮用水放射卫生监测与评价。方法抽查北京市9个区县55个生活饮用水水样,包括井水29个、自来水21个和地面水5个,使用BH1217B双路弱α、β测量仪测量水中的总α和总β放射性,使用RTM2200连续氡测量仪测量水中放射性氡浓度。结果 55个水样中总α浓度最高值为0.325 Bq/L,总β浓度最高值为0.331 Bq/L,均低于我国《生活饮用水卫生标准》GB 5749—2006规定的指导值;地表水氡浓度均值仅为0.62 Bq/L,远低于地下井水中氡浓度的均值(15.95 Bq/L),地下水源井水中氡浓度和总α无直接关系。结论生活饮用水中放射性水平受多种因素影响,应进行持续监测以及时发现和控制水中的意外污染。Objective To understand radioactivity level of drinking water in Beijing city so as to launch radiohygiene survey and assessment of drinking water. Methods 55 water samples including 29 well water, 21 tap water and 5 ground water were collected from 9 districts. The gross α, gross β and radon concentrations of these samples were measured by using a BH1217B dual-channel low α/β measuring instrument and a RTM2200 continuous radon measurement instrument respectively. Results Among 55 water samples the maximum of gross α radioactivity concentration was 0. 325 Bq/L and the maximum of gross radioactivity concentration was 0. 331 Bq/L, and they were lower than the limit issued in national standard GB 5749 -2006 ＂Standards for drinking water quality＂. The average radon concentration in groundwater was only 0. 62 Bq/L, evidently lower than that of underground well water （15.95 Bq/L）. In addition, it is shown that there is no significant correlation between gross α concentration and radon concentration in groundwater. Conclusion Radioactivity level in drinking water is affected by many factors, and it should be monitored continuously to detect and control accidental water pollution in time.

关 键 词：总α 总β 氡 生活饮用水 

分 类 号：R123.1[医药卫生—环境卫生学] R14[医药卫生—公共卫生与预防医学]