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Preliminary development of a radiochemical separation method to determine 135Cs and 135Cs/137Cs isotopic ratio by a non-radiometric technique

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A Correction to this article was published on 07 January 2023

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Abstract

The completion of the radiological inventory of a nuclear facility is hindered by some radionuclides that cannot be easily detected because of hardly measurable gamma lines or low abundance. 135Cs is a long-lived hard-to-measure radionuclide that needs chemical and radiochemical treatments to be measured. A preliminary separation approach to be combined with a non-radiometric assay is being proposed to quantify 135Cs by measuring 135Cs/137Cs isotopic ratio. To exploit this powerful tool, the removal of matrix contaminants, especially 135,137Ba isobaric interferences, remains paramount and challenging. The combined effect of co-precipitation followed by chromatographic separations is being explored in this work.

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Acknowledgements

The authors acknowledge the Collaborative Doctoral Partnership between Politecnico di Milano and European Commission’s Joint Research Centre – Ispra site.

This work was presented at the 19th Radiochemical Conference (RadChem 2022) held in Mariánské Lázně, Czech Republic, on 15–20 May 2022.

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Correspondence to Francesco Galluccio.

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Galluccio, F., Bilancia, G., Mossini, E. et al. Preliminary development of a radiochemical separation method to determine 135Cs and 135Cs/137Cs isotopic ratio by a non-radiometric technique. J Radioanal Nucl Chem 332, 1489–1498 (2023). https://doi.org/10.1007/s10967-022-08685-4

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