Determination of uranium isotopic composition and 236U content of soil samples and hot particles using inductively coupled plasma mass spectrometry

@article{Boulyga2001DeterminationOU,
  title={Determination of uranium isotopic composition and 236U content of soil samples and hot particles using inductively coupled plasma mass spectrometry},
  author={Sergei F. Boulyga and Johanna Sabine Becker},
  journal={Fresenius' Journal of Analytical Chemistry},
  year={2001},
  volume={370},
  pages={612-617}
}
  • S. Boulyga, J. Becker
  • Published 1 July 2001
  • Environmental Science
  • Fresenius' Journal of Analytical Chemistry
Abstract As a result of the accident at the Chernobyl nuclear power plant (NPP) the environment was contaminated with spent nuclear fuel. The 236U isotope was used in this study to monitor the spent uranium from nuclear fallout in soil samples collected in the vicinity of the Chernobyl NPP. Nuclear track radiography was applied for the identification and extraction of hot radioactive particles from soil samples. A rapid and sensitive analytical procedure was developed for uranium isotopic ratio… 
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TLDR
The 234U/238U isotope ratio data were in very good agreement with those of alpha spectrometry, while precision was improved by a factor of up to 10 and counting time was reduced down to ~20 min (10 replicate measurements).
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A significant variation in uranium isotope ratios in microsamples is yielded, in contrast with previously published results from the bulk analysis of contaminated samples originating from the vicinity of Chernobyl.
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Results obtained using carbonate leaching of 236U confirmed that more than 60% of irradiated "Chernobyl" uranium is still in a tetravalent form, ie.
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  • M. Seltzer
  • Environmental Science
    Applied spectroscopy
  • 2003
TLDR
During the present investigation, 235U/238U isotope ratios measured for field samples were in good agreement with those derived from gamma spectrometry measurements, however, substantial compensation was required to mitigate the effects of impaired pulse counting attributed to sample inhomogeneity and sporadic introduction of uranium analyte into the plasma.
Pushing limits of ICP-MS/MS for the determination of ultra-low 236U/238U isotope ratios.
TLDR
This work pushes the limits of triple quadrupole-based ICP-MS tech-nology for accurate detection of 236U/238U isotope ratios down to 10-10, which is so far mainly achievable by AMS.
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