THE ATOMIC WEIGHT OF ANTIMONY

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作   者：

张青莲;  钱秋宇;  赵墨田; 

作者机构：

Department; 

关键词：

SPECTROMETER;  ATOMIC;  ISOTOPIC;  mass;  WEIGHT;  ANTIMONY;  ABUNDANCE; 

期刊名称：

中国科学：化学英文版

i s s n：

年卷期：

1989 年 012 期

页   码：

1409-1414

摘   要：

With enriched antimony isotopes of 99.224 atom% 121Sb and 99.528 atom% 123Sb, twotracer solutions were prepared, whose antimony content was ascertained by the isotopicdilution analysis utilizing an accurately assayed laboratory standard. Mass spectrometricmeasurements were made on a Finnigan MAT- 261 instrument to find the ratio of masses121 and 123. Five synthetic mixtures formed from the tracers served to determine thecorrection factor of mass discrimination. The isotopic abundances thus found for the anti-mony in the mineral stibnite together with the known nuclidic masses yield an accurateatomic weight of antimony as 121 .7575± 0 .0009.