Measurement of the atomic weight of ruthenium by negative thermal ionization mass spectrometry

被引:19
作者
Huang, M
Masuda, A
机构
[1] Department of Chemistry, University of Electro-Communications, Chofu, Tokyo 182
关键词
D O I
10.1021/ac960648n
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Methods for ruthenium isotope measurement by both positive and negative ion thermal ionization mass spectrometry (PTI-MS and NTI-MS, respectively) are studied in this work. We found that Ru isotopes 100 and 104 are subjected to isobaric interferences from the silica gel used to improve sensitivity in PTI-MS. Measurement of ruthenium isotopes by NTI-MS is discussed here. The method is proved to be sensitive and free from the isobaric interferences. With precise isotope ratios of several ruthenium reagents measured by NTI-MS, we calculated the atomic weight of ruthenium to be 101.064 98 +/- 0.000 16 (2 sigma), which is much more accurate than the data of 101.07 +/- 0.02 currently suggested by IUPAC.
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页码:1135 / 1139
页数:5
相关论文
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