Isotopic and ultratrace analysis of uranium by double-focusing sector field ICP mass spectrometry

An analytical method for the ultrarace and isotopic analysis of uranium in radioactive waste samples using a double-focusing sector field ICP mass spectrometer is described. In high-purity water a detection limit for uranium in the lowest fg/mL range has been achieved. Under optimum experimental con...

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Bibliographic Details
Published in:Fresenius' journal of analytical chemistry 1997-10, Vol.359 (4-5), p.407-409
Main Authors: KERL, W, BECKER, J. S, DIETZE, H.-J, DANNECKER, W
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Chemistry
Exact sciences and technology
Pollution
Radioactive wastes
Spectrometric and optical methods
Wastes
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Summary:An analytical method for the ultrarace and isotopic analysis of uranium in radioactive waste samples using a double-focusing sector field ICP mass spectrometer is described. In high-purity water a detection limit for uranium in the lowest fg/mL range has been achieved. Under optimum experimental conditions ( exp 235 U/ exp 238 Uapprox =1), the precision in exp 235 U/ exp 238 U isotopic ratio determinations has been determined as 0.07% RSD. With the isotopic standard U-020 ( exp 235 U/ exp 238 U=0.0208) a precision of 0.23% RSD at the 100 pg/mL level using ultrasonic nebulization has been achieved. With exp 234 U/ exp 238 U isotopic ratios of down to 10 exp -5 , the values obtained by double-focusing sector field ICP-MS and alpha spectrometry were in agreement.
ISSN:0937-0633
1432-1130
DOI:10.1007/s002160050598