Pichler, V., Welch, J. M., & Sterba, J. H. (2022). Radiochemical effects of thermal neutron capture in Cr(tmhd)₃: method development. Journal of Radioanalytical and Nuclear Chemistry, 331(12), 5067–5079. https://doi.org/10.1007/s10967-022-08546-0
The radiochemical effects of thermal neutron capture in tris(2,2,6,6-tetramethyl-3,5-heptandionato)chromium(III) (Cr(tmhd)₃) were investigated. A method was devised to quantify the amount of the induced ⁵¹Cr activity recoverable in the original chemical form and to confirm that it is indeed Cr(tmhd)₃. The method is based on a combination of chemical separation (column chromatography and recrystallization) and analytical (radio-TLC, HPLC, and gamma spectrometry) techniques. Cr(tmhd)₃ samples were irradiated and purified in two steps after irradiation. We found that two of the (three) purification pathways yielded good agreement among final ⁵¹Cr activity concentrations. The corresponding samples appeared to be of exceptional radiochemical purity.
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Project title:
COMET K2 Exzellenzzentrums für Tribologie: 201410202‐FV01, 2011205‐DV03 (FFG - Österr. Forschungsförderungs- gesellschaft mbH)
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