Mass spectrometric determination of lanthanum in nuclear fuels

A sensitive, precise technique was developed for determination of La in nuclear fuel samples by thermal ionization mass spectrometry. Interference from Ba was suppressed by measurement of LaO exp + at low filament temperature and by elimination of filament loading reagents. Nanogram quantities of La...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1986-05, Vol.58 (6), p.1178-1181
Main Authors: Elliot, Nancy L, Green, Lawrence W, Recoskie, Bernadette M, Cassidy, Richard M
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Fuels
Nuclear fuels
Preparation and processing of nuclear fuels
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Summary:A sensitive, precise technique was developed for determination of La in nuclear fuel samples by thermal ionization mass spectrometry. Interference from Ba was suppressed by measurement of LaO exp + at low filament temperature and by elimination of filament loading reagents. Nanogram quantities of La were used for analysis; the overall precision for fuel samples was 0.2%. Good agreement (0.5%) was observed between results obtained by this technique and those obtained by HPLC on a series of samples. Significant change in isotopic fractionation was not observed during the first 3 h of analysis. The sensitivity of the observed isotope ratio to filament temperature was studied, and the optimal range for measurement was 1200-1230 deg C. 12 ref.--AA
ISSN:0003-2700
1520-6882
DOI:10.1021/ac00297a044