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A Study of Isotopic Homogeneity in ¿̐ưBlended Uranium¿̐ư Using ICP-MS / JS. Crain

Conference Author:
Applications of Inductively Coupled Plasma-Mass Spectrometry to Radionuclide Determinations (1998 : New Orleans, Louisiana)
Physical Description:
1 online resource (6 pages) : illustrations, figures, tables
Additional Creators:
Crain, JS., American Society for Testing and Materials, and ASTM International
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Summary:
A 20 kg uranium metal ingot was prepared from two isotopically distinct feedstocks, and drillings from various ingot sections were dissolved in a mixture of HCl, HNO3, and HF. Uranium isotope ratios in each solution were determined by inductively coupled plasma-mass spectrometry (ICP-MS); total dissolved solid content was 20 ?g/L for determination of 238U/235U, and 2 mg/L for determination of 236U/235U and 234U/235U. Between-sample coefficients of variation (n=35) for 238U/235U, 236U/235U, and 234U/235U were 0.70%, 0.90%, and 1.4%, respectively. Linear regression indicated that 236U/235U versus238U/235U and 234234234U/235U versus238U/235U were significantly correlated at the 90% confidence interval; 234U/235U versus 236U/235U was significantly correlated at the 98% confidence interval. These data show that the samples were not isotopically homogeneous, and demonstrate that ICP-MS can be used to assess isotopic homogeneity, even in cases where aggregate variations in isotopic composition are on the order of 1%.
Dates of Publication and/or Sequential Designation:
Volume 1998, Issue 1344 (January 1998)
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ISBN:
9780803153905 (e-ISBN)
9780803120341
0803120346
Digital File Characteristics:
text file PDF
Bibliography Note:
Includes bibliographical references 4.
Other Forms:
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Also available in PDF edition.
Reproduction Note:
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1998. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details:
Mode of access: World Wide Web.
Source of Acquisition:
ASTM International PDF Purchase price USD25.
View MARC record | catkey: 27998480