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目的更好地监控国控点黄河水山东段水中镭-226放射性水平,掌握枯水期和丰水期水中镭-226放射性水平的变化情况。方法通过对2012-2016年国控点黄河水山东段济南泺口和东营入海口2个点位进行连续采样监测,采用氢氧化铁-碳酸钙载带射气闪烁法对样品水中镭-226分析。结果黄河水济南泺口和东营入海口水中镭-226放射性水平枯水期平均值分别为8.15 mBq/L和7.60 mBq/L,丰水期的平均值分别为7.58 mBq/L和5.70 mBq/L。结论黄河水山东段济南泺口和东营入海口水中镭-226放射性水平处于本底水平。
Objective To better monitor radioactive level of radium-226 in the water from the Shandong section of the Yellow River in the state control point and to grasp the radioactive level of radium-226 in water during dry season and wet season. Methods The samples of Jinan-Guokou and Dongying into the sea at the national water control point of the Yellow River in the national control point of 2012-2016 were continuously sampled and monitored, and the radium-226 was analyzed by radioactive iron hydroxide-calcium carbonate radioactive scintillation method. Results The average radioactivity of radium-226 in the Ji’nan Hekou and Dongying estuaries in the Yellow River water was 8.15 mBq / L and 7.60 mBq / L, respectively. The mean of wet season was 7.58 mBq / L and 5.70 mBq / L, respectively. Conclusions Radiation levels of radium-226 in Ji’nan Nankou and Dongying estuaries in the eastern part of the Yellow River are at the background level.