ACCURACY IN THE ISOTOPE-DILUTION MASS-SPECTROMETRY OF URANIUM IN RUBIDIUM URANIUM SULFATE RB2U(SO4)3

Authors
RAMAKUMAR KL JEYAKUMAR S RAMAN VA GNANAYYAN L RAO R SAXENA MK KAVIMANDAN VD JAIN HC
Citation
Kl. Ramakumar et al., ACCURACY IN THE ISOTOPE-DILUTION MASS-SPECTROMETRY OF URANIUM IN RUBIDIUM URANIUM SULFATE RB2U(SO4)3, Analytical letters, 26(5), 1993, pp. 981-999
Citations number
11
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical letters → ACNP
ISSN journal
00032719
Volume
26
Issue
5
Year of publication
1993
Pages
981 - 999
Database
ISI
SICI code
0003-2719(1993)26:5<981:AITIMO>2.0.ZU;2-Q
Abstract
Problems encountered in the determination of uranium in rubidium urani um sulphate (Rb2U(SO4)3) employing isotope dilution thermal ionisation mass spectrometry (ID-TIMS) are discussed. The positive bias of 0.2 t o 0.3% in the determination of uranium in Rb2U(SO4)3 by ID-TIMS with r espect to the stoichiometric composition has been resolved by modifyin g the chemical exchange procedures. The concentration of uranium in Rb 2U(SO4)3 could be determined with an accuracy better than 0.1% employi ng the HClO4 treatment for proper isotopic exchange between the spike and sample isotopes.