REMOVAL OF 101Rh FROM MIXED HNO3/HCl MATRIX

17th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings, Volume II) (2024) [K-19-P, pp. 515-518]

AUTHOR(S) / АУТОР(И): Đorđe Cvjetinović , Jelena Petrović , Zeynep Talip and Dorothea Schumann

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DOI: 10.46793/Phys.Chem24II.515C

ABSTRACT / САЖЕТАК:

Proton irradiation of vanadium leads to the production of many rare radionuclides such as 32Si, 26Al, 41Ca, and 44Ti/44Sc. The 32Si is a particularly interesting radionuclide that can be used as a radiometric geochronometer. However, due to the high half-life uncertainty it is first needed to precisely measure the 32Si half-life which is the aim of the SINCHRON project. The first step in this endeavor has been to produce and radiochemicaly separate large amounts of 32Si from other radionuclides produced during proton irradiation. One of the more elusive radionuclidic impurities encountered during the radiochemical separation was 101Rh. It is well known that Rh forms different stable complexes in acidic media, ranging from cationic, anionic to neutral making it difficult to remove in a single step. We report that we have successfully implemented ion-exchange chromatography to remove trace amounts of 101Rh from an acidic (pH = 2) HNO3/HCl mixed matrix.

KEYWORDS / КЉУЧНЕ РЕЧИ:

ACKNOWLEDGEMENT / ПРОЈЕКАТ:

This project is funded by the Swiss National Science Foundation (SNSF) as part of SINERGIA (No. 177229) and receives additional financial support from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 884104 (PSI FELLOW-III-3i).

The authors are grateful to the UK representative office of the Purolite Corporation for providing the Purolite S 985 resin.

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