| 锑,铕,铈,铒同位素丰度和原子量测量 |
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| 引用本文： | 赵墨田,王军.锑,铕,铈,铒同位素丰度和原子量测量[J].质谱学报,1999,20(1):37-43. |
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| 作者姓名： | 赵墨田 王军 |
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| 作者单位： | 国家标准物质研究中心 |
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| 摘 要： | 用已知化学纯度的两种浓缩同位素通过化学计量，配制人工合成样品，用来测量质谱计系统误差校正系数，校正用该仪器测量的来自地球不同地域矿样和试剂样品中锑（Ｓｂ）、铕（Ｅｕ）、铈（Ｃｅ）、铒（Ｅｒ）四种元素天然同位素丰度比，求出这些元素同位素丰度的真值。用该真值和已知的上述四元素核素质量，计算得原子量分别为１２１．７５９７（７）Ｓｂ、１５１．９６４４（９）Ｅｕ、１４０．１１５７（８）Ｃｅ、１６７．２５９１（９）Ｅｒ
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| 关 键 词： | 同位素丰度 原子量 锑、铕、铈、铒 绝对质谱法 |
The Determination of Atomic Weights of Antimony,\=Europium,Cerium and Erbium |
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| Zhao
Motian,Wang Jun\=.The Determination of Atomic Weights of Antimony,\=Europium,Cerium and Erbium[J].Journal of Chinese Mass Spectrometry Society,1999,20(1):37-43. |
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| Authors: | Zhao
Motian Wang Jun\= |
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| Abstract: | Calibrated mass spectrometric measurements on highly enriched
isotopes of Sb,Eu,Ce,Er in the form of oxides of well-defined purity were carried out using a
thermal ionization mass spectrometer,yielding absolute isotopic compositions(see table 2)and
atomic weights of antimony,europium,cerium and erbium as
121,7597(7)Sb,151,9644(4)Eu,140,1157(8)Ce and 167,2591(9)Er with an uncertainty given on the
basis of 95% confidence limit.\=\= |
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| Keywords: | atomic weight absolute isotope abundance antimony europium cerium erbium |
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