热电离质谱法测定国际比对氧化铀芯块中的铀同位素比值  

Thermal Ionization Mass Spectrometry Measurement of Uranium Isotopic Ratios in Uranium Oxide Fuel Pellet in IAEA 2017 Nuclear Material Round Robin

作　　者：张继龙 黎春 王岚 武朝辉 Cole Hexel 周志波 杨丽芳 李多宏 谭西早 ZHANG Jilong;LI Chun;WANG Lan;WU Zhaohui;Cole Hexel;ZHOU Zhibo;YANG Lifang;LI Duohong;TAN Xizao(State Nuclear Security Technology Center,Beijing 102401,China;Nuclear Analytical Chemistry and Isotopic Laboratories,Oak Ridge National Laboratory,Department of Energy,Oak Ridge,TN 37830,U.S.)

机构地区：[1]国家核安保技术中心,北京102401 [2]核分析化学与同位素实验室美国能源部橡树岭国家实验室,橡树岭美国田纳西州37830

出　　处：《铀矿地质》2019年第1期38-43,共6页Uranium Geology

摘　　要：采用全蒸发-热电离质谱技术测量了国际比对二氧化铀样品中的铀同位素比值。比对结果表明,本实验室提交的^(234)U/^(238)U、^(235)U/^(238)U和^(236)U/^(238)U值与IAEA公布的参考值偏差分别为0.02%、-0. 003%和0. 97%,在实验室间分析测试能力评价中, Z (或ζ)分数分别是0.03(或0.05)、-0.05(或-0.07)和0.15(或0.25),均被评价为满意。This work deployed Total Evaporation method of Thermal Ionization Mass Spectrometry for measuring the uranium isotopic ratios in an uranium dioxide fuel pellet,which was a part of an international nuclear material round robin held by International Atomic Energy Agency(IAEA).The results indicated that the 234U/238U,235U/238U and 236U/238U ratios submitted by our laboratory had deviations of 0.02%,-0.003%,and 0.97%from the published reference values by IAEA respectively.In laboratory analytical capability assessment,Z(ζ)scores are 0.03(0.05),-0.05(-0.07)and 0.15(0.25)respectively,showed that all data were assessed as satisfactory.

关 键 词：二氧化铀芯块 国际比对 铀同位素比 热电离质谱 全蒸发 

分 类 号：O657.63[理学—分析化学]