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Accuracy in the Isotope Dilution Mass Spectrometry of Uranium in Rubidium Uranium Sulphate Rb2U(SO4)3

 

作者: K.L. Ramakumar,   S. Jeyakumar,   V.A. Raman,   L. Gnanayyan,   Radhika Rao,   M.K. Saxena,   V.D. Kavimandan,   H.C. Jain,  

 

期刊: Analytical Letters  （Taylor Available online 1993）
卷期: Volume 26, issue 5  

页码: 981-999

 

ISSN:0003-2719

 

年代: 1993

 

DOI:10.1080/00032719308019880

 

出版商: Taylor & Francis Group

 

关键词: Thermal ionisation mass spectrometry;Isotope dilution;Uranium in Rb2U(SO4)3;Isotopic exchange

 

数据来源: Taylor

 

摘要:

Problems encountered in the determination of uranium in rubidium uranium sulphate (Rb2U(SO4)3) employing isotope dilution thermal ionisation mass spectrometry (ID-TIMS) are discussed. The positive bias of 0.2 to 0.3% in the determination of uranium in Rb2U(SO4)3by ID-TIMS with respect to the stoichiometric composition has been resolved by modifying the chemical exchange procedures. The concentration of uranium in Rb2U(SO4)3could be determined with an accuracy better than 0.1% employing the HClO4treatment for proper isotopic exchange between the spike and sample isotopes.

 

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