| 全反射X射线荧光光谱法测定核废水中的铀和钍 |
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| 引用本文： | 袁建,刘香英,冯硕,夏晨光,李军杰. 全反射X射线荧光光谱法测定核废水中的铀和钍[J]. 核化学与放射化学, 2021, 43(1): 87-90. DOI: 10.7538/hhx.2020.YX.2019098 |
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| 作者姓名： | 袁建 刘香英 冯硕 夏晨光 李军杰 |
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| 作者单位： | 核工业北京地质研究院分析测试研究中心,北京100029;核工业北京地质研究院分析测试研究中心,北京100029;核工业北京地质研究院分析测试研究中心,北京100029;核工业北京地质研究院分析测试研究中心,北京100029;核工业北京地质研究院分析测试研究中心,北京100029 |
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| 基金项目： | 国家自然科学基金面上项目(41973051)。 |
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| 摘 要： | 建立了直接制样-全反射X射线荧光光谱法(TXRF)测定核废水中U、Th元素。以Ga做内标,方法的检出限分别为0.010、0.008 mg/L,标准溶液测量结果相对标准偏差小于7%(n=6),加标回收率在95%～115%之间。通过TXRF法与电感耦合等离子体质谱法(ICP-MS)对未知样品的测量结果比较,两种方法测量结果一致,U和Th的线性回归方程的斜率分别约为0.93、1.0,线性相关系数分别为0.997、0.999。
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| 关 键 词： | 全反射X射线荧光光谱法 核废水 铀 钍 |
Uranium and Thorium Determination in Nuclear Wastewater by Total Reflection X-Ray Fluorescence Spectrometry |
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| YUAN Jian,LIU Xiang-ying,FENG Shuo,XIA Chen-guang,LI Jun-jie. Uranium and Thorium Determination in Nuclear Wastewater by Total Reflection X-Ray Fluorescence Spectrometry[J]. Journal of Nuclear and Radiochemistry, 2021, 43(1): 87-90. DOI: 10.7538/hhx.2020.YX.2019098 |
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| Authors: | YUAN Jian LIU Xiang-ying FENG Shuo XIA Chen-guang LI Jun-jie |
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| Affiliation: | Analytical Laboratory of Beijing Research Institute of Uranium Geology, Beijing 100029, China |
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| Abstract: | A method for the determination of uranium and thorium in nuclear wastewater by total reflection X-ray fluorescence spectrometry(TXRF)with direct sample preparation was established.Ga was used as an internal standard,the detection limits for U,Th are 0.010,0.008 mg/L,and the relative standard deviation of the standard solution measurement is less than 7%(n=6),and the marked recovery is between 95% and 115%.The method has been applied to the determination of unknown samples,and the results are in good agreement with ICP-MS.The slope of equation of line regression about U and Th is 0.93 and 1.0 respectively.The correlation coefficient of equation about U and Th is 0.997 and 0.999 respectively. |
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| Keywords: | total reflection X-ray fluorescence spectrometry nuclear wastewater uranium thorium |
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