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目的了解大连市生活饮用水中总α、总β放射性水平,为环境放射性污染监测提供水的本底参考资料。方法根据大连市生活饮用水供需体系和社会人口等因素确定采样点,依据国家GB/T 5750-2006《生活饮用水标准检验方法》进行检测。结果水源水总α比活度为(0.28~4.59)×10-2Bq/L、总β比活度为(5.73~16.62)×10-2Bq/L,管网末梢水总α比活度为(0.82~3.72)×10-2Bq/L、总β比活度为(1.09~12.01)×10-2Bq/L。结论大连市生活饮用水中总α、总β比活度均低于国家标准限值,水源水总α、总β比活度在我国湖库水正常总α、总β水平范围内。
Objective To understand the total α and total β radioactivity in drinking water in Dalian and to provide a background reference for the monitoring of environmental radioactive contamination. Methods Based on the drinking water supply and demand system and social population in Dalian, sampling points were determined and tested according to GB / T 5750-2006 Standard Test Method for Domestic Drinking Water. Results The total specific activity of tap water was (0.28 ~ 4.59) × 10-2Bq / L and the total specific activity was (5.73 ~ 16.62) × 10-2Bq / L. The total specific activity of tap water was 0.82 ~ 3.72) × 10-2Bq / L, total β specific activity was (1.09 ~ 12.01) × 10-2Bq / L. Conclusion The total α and total β specific activities of drinking water in Dalian are lower than the national standard limits. The total α and total β activities of total water in the drinking water are within the range of normal α and total β in China.