• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Spectrochimica Acta, Part B. Atomic Spectroscopy >Evaluation of total-reflection X-ray fluorescence measurements for the prospective determination of uranium in the decommissioning of the Fukushima Daiichi Nuclear Power Plant reactor
【24h】

Evaluation of total-reflection X-ray fluorescence measurements for the prospective determination of uranium in the decommissioning of the Fukushima Daiichi Nuclear Power Plant reactor

机译：对福岛核电站核电厂反应堆退役前瞻性铀的总反射X射线荧光测量评价

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Owing to the strong earthquake and subsequent tsunami in March 2011, the Fukushima Daiichi Nuclear Power Plant was exceedingly damaged and is currently under decommissioning. Herein, we propose a methodology to evaluate the uranium concentration in the drainage water from the decommissioning field. Model sample solutions were prepared by mixing multi-element standard solutions containing uranium with an immersion liquid containing demolition debris. A very small amount (10?μL) of the sample solutions was dropped onto a quartz optical flat directory with or without a chromatography resin separation. The total-reflection X-ray fluorescence (TXRF) spectrometry measurement was performed using a portable device. These measurements showed an overlap of the Rb Kα and U Lα peaks in the TXRF spectrum of the sample solution prepared without chromatography resin separation. By contrast, no overlap was observed in the TXRF spectrum of the sample solution after the separation using a chromatography resin. When the drainage water is composed of 0.04% U-234, 5% U-235, and 94.96% U-238, the measurement times in both methods (i.e., with and without pretreatment) required to attain detection limits lower than the effluent standard value are 15 and 5?min, respectively. Additionally, the detection limits, analysis times, required sample volumes, and procedures of the two methods are compared.
机译：由于2011年3月的强烈地震和随后的海啸，福岛·戴奇核电站非常受损，目前正在退役。在此，我们提出了一种方法，以评估排水域中排水水中的铀浓浓度。通过将含有拆卸碎片的浸入液体混合含有铀的多元素标准溶液混合含有沉淀液的多元素标准溶液来制备模型样品溶液。将非常少量的样品溶液中的样品溶液滴到有或没有色谱树脂分离的石英光学平面目录上。使用便携式设备进行总反射X射线荧光（TXRF）光谱测量。这些测量显示RBKα和ULα峰的重叠在没有色谱树脂分离的情况下制备的样品溶液的TXRF光谱中的峰值。相比之下，在使用色谱树脂分离后，在样品溶液的TXRF光谱中没有观察到重叠。当排水水由0.04％U-234,5％U-235和94.96％U-238组成时，两种方法中的测量时间（即，具有和无预处理）所需的检测限度低于流出标准值分别为15和5？分钟。另外，比较了检测限，分析时间，所需的样本体积和两种方法的程序。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号