TAILIEUCHUNG - Analysis of radionuclides in microsystem: application to the selective recovery of 55Fe by solvent extraction

This study already demonstrate the high potential of microfluidic technology to improve analytical operations on D&D samples. This method will further be validated with radioactive samples. | Analysis of radionuclides in microsystem application to the selective recovery of 55Fe by solvent extraction EPJ Nuclear Sci. Technol. 6 10 2020 Nuclear Sciences S. Rassou et al. published by EDP Sciences 2020 amp Technologies https epjn 2020002 Available online at https REGULAR ARTICLE Analysis of radionuclides in microsystem application to the selective recovery of 55Fe by solvent extraction Somasoudrame Rassou Clarisse Mariet and Thomas Vercouter Den Service d Etudes Analytiques et de Réactivité des Surfaces SEARS CEA Université Paris-Saclay 91191 Gif-sur-Yvette France Received 28 October 2019 Received in final form 20 December 2019 Accepted 16 January 2020 Abstract. The minimization of the sample quantities required by analytical laboratories as well as the increase of the fastness of the analytical operations are emerging axes for improved radiochemical analyses related to D amp D issues. Two microsystem-based protocols were developed for the selective recovery of 55Fe from radioactive samples by solvent extraction. Both protocols were tested on iron solutions in two different microchips. The yields of Fe extraction were compared with macroscale batch experiments. Better performances with more than 80 of iron extracted were obtained with the second protocol which is based on a reactive transfer of the iron cation and more suited to the use of microchannels and very low contact times. This study already demonstrate the high potential of microfluidic technology to improve analytical operations on D amp D samples. This method will further be validated with radioactive samples. 1 Introduction and development of miniaturized analytical device the so- called lab-on-a-chip can answer these issues by integrating The characterization of the sites under decommissioning or and optimizing one or several analytical operations in the dismantling and of the subsequent wastes is addressed by same object that uses only the right quantity of .

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