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An approach to separating Pu, U, and Ti from high-purity graphite for isotopic analysis by MC-ICP-MS

Journal Article · · Journal of Analytical Atomic Spectrometry
DOI:https://doi.org/10.1039/D1JA00079A· OSTI ID:1785216
Information about elemental and isotopic systematics of ultra-trace level actinides (e.g. U and Pu) and main group elements (e.g. Ti) present within nuclear grade graphite is vital to the nuclear community for improved reactor operation and security. In support of this, extensive effort has been placed on improving analysis methods (i.e., inductively coupled plasma-mass spectrometry). However, significantly less effort has been devoted to the optimization of chemical separation methods. Within the separation community, commercially available Eichrom™ resins are often employed, as their elution characteristics for various elements have been well studied, but the direct optimization of actinides and trace metal separations from a single sample have not been widely investigated. Here, methods using various Eichrom pre-packed cartridges were explored to achieve separation of ultra-trace levels of U, Pu, and Ti from a variety of graphite samples. Once the validity of the combined separation scheme was established using certified reference materials, the method was applied to historic, unirradiated and irradiated, graphite samples. For all samples investigated, precise isotope ratio measurements for the titanium isotope systems were made.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1785216
Alternate ID(s):
OSTI ID: 1779990
Journal Information:
Journal of Analytical Atomic Spectrometry, Journal Name: Journal of Analytical Atomic Spectrometry Vol. 36; ISSN 0267-9477
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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  • Boulyga, Sergei F.; Testa, Corrado; Desideri, Donatella
  • Journal of Analytical Atomic Spectrometry, Vol. 16, Issue 11, p. 1283-1289 https://doi.org/10.1039/b103178n
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