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用放射化学中子活化方法研究陨石中的Os和Ru同位素丰度

用放射化学中子活化方法研究陨石中的Os和Ru同位素丰度[J]. 核化学与放射化学, 1993, 15(1): 26-26.
引用本文: 用放射化学中子活化方法研究陨石中的Os和Ru同位素丰度[J]. 核化学与放射化学, 1993, 15(1): 26-26.
STUDY ON ISOTOPIC ABUNDANCE OF OSMIUM AND RUTHENIUM IN METEORITES BY RNAA[J]. Journal of Nuclear and Radiochemistry, 1993, 15(1): 26-26.
Citation: STUDY ON ISOTOPIC ABUNDANCE OF OSMIUM AND RUTHENIUM IN METEORITES BY RNAA[J]. Journal of Nuclear and Radiochemistry, 1993, 15(1): 26-26.

用放射化学中子活化方法研究陨石中的Os和Ru同位素丰度

STUDY ON ISOTOPIC ABUNDANCE OF OSMIUM AND RUTHENIUM IN METEORITES BY RNAA

  • 摘要: 选择南丹、邕宁铁陨石经2mol/l H_2SO_4处理后的残渣,和吉林、洮南石陨石的金属相部分,以Os、Ru试剂(地球同位素丰度)为标准,用放射化学中子活化方法测定~(190)Os/~(184)Os及~(96)Ru/~(102)Ru的比值。实验全面考虑了在照射、分离、测量过程中各种因素对Os和Ru同位素丰度测定的影响。对~(190)Os/~(184)Os的测量统计误差可控制在1%以内。实验结果表明,这4种陨石的~(190)Os/~(184)Os和~(96)Ru/~(102)Ru的比值与地球标准相比,不存在统计上有意义的同位素丰度比异常。
    Abstract: The ratios of 190Os/184Os and 96Ru/102Ru for the residues of the Nadan and the Yongning iron meteorites, as well as for the metal phases of the Jilin and the Taonan stone meteorites,are determined by RNAA. Before that,Nandan and Yongning iron meteorites are pretreated by dissolution in 2 mol/1 H2SO4. All factors affecting Os and Ru isotopic abundances during the processes of irradiation,separation and measurement have been taken into consideration. The statistical errors of measurement for the ratio of 190Os/184Os can be controlled to be less than 1%. The experimental results indicate that the statistically significant anomalies affecting isotopic 190Os/184Os and 96Ru/102Ru abundance have not been found relative to commercial Os and Ru chemicals.
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出版历程
  • 收稿日期:  1991-08-11
  • 刊出日期:  1993-02-19

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