Absolute isotopic composition and atomic weight of germanium

被引：18

作者：

Chang, TL ^{[1
]}

Li, WJ

Qiao, GS

Qian, QY

Chu, ZY

机构：

[1] Peking Univ, Dept Chem, Beijing 100871, Peoples R China

[2] Beijing Univ Sci & Technol, Dept Chem, Beijing 100083, Peoples R China

[3] Chinese Acad Sci, Inst Geol, Beijing 100029, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 1999年 / 189卷 / 2-3期

关键词：

germanium; isotopic abundance; atomic weight; mass spectrometry;

D O I：

10.1016/S1387-3806(99)00081-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Gravimetric synthetic mixtures prepared from highly enriched isotopes of germanium in the form of oxides of well defined purity were used to calibrate a thermal ionization mass spectrometer. Measurements on natural germanium samples yielded an absolute isotopic composition of 20.38(10) at. % Ge-70, 27.34(9) at. % Ge-72, 7.75(5) at. % Ge-73, 36.71(9) at. % Ge-74, and 7.82(4) at. % Ge-76, and the atomic weight of germanium as 72.639(7) both with an uncertainty given on the basis of 95% confidence limit. No isotopic fractionation was found in terrestrial normal germanium materials. (Int J Mass Spectrom 189 (1999) 205-211) (C) 1999 Elsevier Science B.V.

引用

页码：205 / 211

页数：7

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