TY - JOUR
T1 - Chemical and Isotopic Characterization of Noble Metal Phase from Commercial UO2Fuel
AU - Pellegrini, Kristi L.
AU - Soderquist, Chuck Z.
AU - Shen, Steve D.
AU - Krogstad, Eirik J.
AU - Palmer, Camille J.
AU - Gerez, Kyzer R.
AU - Buck, Edgar C.
AU - Lach, Timothy G.
AU - Schwantes, Jon M.
AU - Clark, Richard A.
N1 - Funding Information:
This work was funded by Pacific Northwest National Laboratory under Laboratory Directed Research and Development (LDRD) funds with support from the Nuclear Process Science Initiative (NPSI). Pacific Northwest National Laboratory is operated by Battelle Memorial Institute for the United States Department of Energy under contract DE-AC05-76RL0-1830.
Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/5/21
Y1 - 2019/5/21
N2 - We report elemental and isotopic analysis for the noble metal fission product phase found in irradiated nuclear fuel. The noble metal phase was isolated from three commercial irradiated UO2 fuels by chemically dissolving the UO2 fuel matrix, leaving the noble metal phase as the undissolved residue. Macro amounts of this residue were dissolved using a KOH + KNO3 fusion and then chemically separated into individual elements for analysis by mass spectrometry. Though the composition of this phase has been previously reported, this work is the most comprehensive chemical analysis of the isolated noble metal phase to date. We report both elemental and isotopic abundances of the five major components of the noble metal phase (Mo, Tc, Ru, Rh, Pd). In addition, we report a sixth element present in high quantities in this phase, tellurium. Tellurium appears to be an integral component of noble metal particles.
AB - We report elemental and isotopic analysis for the noble metal fission product phase found in irradiated nuclear fuel. The noble metal phase was isolated from three commercial irradiated UO2 fuels by chemically dissolving the UO2 fuel matrix, leaving the noble metal phase as the undissolved residue. Macro amounts of this residue were dissolved using a KOH + KNO3 fusion and then chemically separated into individual elements for analysis by mass spectrometry. Though the composition of this phase has been previously reported, this work is the most comprehensive chemical analysis of the isolated noble metal phase to date. We report both elemental and isotopic abundances of the five major components of the noble metal phase (Mo, Tc, Ru, Rh, Pd). In addition, we report a sixth element present in high quantities in this phase, tellurium. Tellurium appears to be an integral component of noble metal particles.
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U2 - 10.1021/acs.analchem.8b05549
DO - 10.1021/acs.analchem.8b05549
M3 - Article
C2 - 31018634
AN - SCOPUS:85065390606
SN - 0003-2700
VL - 91
SP - 6522
EP - 6529
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 10
ER -