北京市2011—2013年水中总α、总β放射性测量分析

发布时间：2018-08-03 16:27

【摘要】：[目的]针对2011年3月11日日本福岛核事故,于2011—2013年采取相应的技术措施监测北京地区河、湖水与饮用水放射性污染水平,即该两类水中总α、总β放射性水平,确保饮用水的放射性污染水平不超过国家相关标准限值要求,为将来河、湖水的放射性水平可能发生的变化提供基础数据。[方法]制定采集计划,每年分别在枯水期和丰水期采集河、湖水和饮用水,样品的采集覆盖北京市16个区(县),依据GB/T 5750.13—2006《生活饮用水标准检验方法》和GB 5749—2006《生活饮用水卫生标准》进行采集,采用相对比较测量法对水样总α、总β放射性进行测量分析。[结果]河、湖水样品中,总α放射性水平算术平均值范围为0.06~0.15 Bq/L,总β放射性水平平均值范围为0.20~0.25 Bq/L;饮用水样品中,总α放射性水平算术平均值范围为0.09~0.11 Bq/L,总β放射性水平平均值范围为0.08~0.10 Bq/L。[结论]2011—2013年北京地区河、湖水及饮用水在枯水期和丰水期的放射性水平均未超过国家生活饮用水卫生标准指导值。
[Abstract]:[objective] in response to the Fukushima nuclear accident in Japan on March 11, 2011, technical measures were taken to monitor the levels of radioactive contamination of rivers, lakes and drinking water in Beijing from 2011 to 2013, that is, the total 伪 and 尾 radioactivity levels of the two types of water, To ensure that the level of radioactive contamination of drinking water does not exceed the national standard limit requirements, provide the basic data for the possible changes of the radioactivity level of rivers and lakes in the future. [methods] A collection plan was drawn up to collect water from rivers, lakes and drinking water in dry and high water periods respectively. Samples were collected in 16 districts (counties) of Beijing, according to GB/T 5750.13-2006 and GB 5749-2006. The total 伪 and 尾 radioactivity of water samples were measured and analyzed by relative comparison method. [results] in river and lake water samples, the arithmetic mean range of total 伪 -radioactivity level was 0.06 ~ 0.15 Bq / L, and the average total 尾 -radioactivity level was 0.20 ~ 0.25 Bq / L; in drinking water sample, The arithmetic average range of total 伪 -radioactivity level is 0.09 ~ 0.11 Bq / L, and the average range of total 尾 ~ (-) radioactivity level is 0.08 ~ 0.10 Bq 路L ~ (-1). [conclusion] the radioactivity levels of rivers, lakes and drinking water in Beijing from 2011 to 2013 are not higher than the national sanitary standard of drinking water in the dry and high water periods.
【作者单位】：北京市预防医学研究中心;中国人民解放军军事医学科学院放射与辐射医学研究所;
【分类号】：R123.1

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