Repeatability and reproducibility of measurements of low dissolved radiocesium concentrations in freshwater using different pre-concentration methods

Repeatability and reproducibility of measurements of low dissolved radiocesium concentrations in freshwater using different pre-concentration methods
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使用不同预浓缩方法测量淡水中低溶解放射性铯浓度的重复性和再现性

DOI:
10.1007/s10967-019-06696-2
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发表时间:
2019
影响因子:
1.6
通讯作者:
他23名
他23名
中科院分区:
化学4区
文献类型:
--
作者:
Kurihara Momo;Yasutaka Tetsuo;Aono Tatsuo;Ashikawa Nobuo;Ebina Hiroyuki;Iijima Takeshi;Ishimaru Kei;他23名

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我们评估了测定福岛淡水中低溶解放射性铯浓度的方法的重复性和再现性。21个实验室通过5种不同的预浓缩方法(普鲁士蓝浸渍滤筒、与磷钼酸铵共沉淀、蒸发、固相萃取盘和离子交换树脂柱)预浓缩10 L样品中的3 L,并测量放射性铯的活度。所有137Cs结果的z分数均在± 2以内,表明该方法具有良好的精密度。表明不同实验室之间重现性的相对标准偏差(RSD)大于表明每个单独实验室重复性的RSD。
We assessed the repeatability and reproducibility of methods for determining low dissolved radiocesium concentrations in freshwater in Fukushima. Twenty-one laboratories pre-concentrated three of 10 L samples by five different pre-concentration methods (Prussian-blue-impregnated filter cartridges, coprecipitation with ammonium phosphomolybdate, evaporation, solid-phase extraction disks, and ion-exchange resin columns), and activity of radiocesium was measured. Thez-scores for all of the137Cs results were within ± 2, indicating that the methods were a good degree of precision. The relative standard deviations (RSDs) indicating the reproducibility among different laboratories were larger than the RSDs indicating the repeatability in each separate laboratory.
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