Freiburg 2024 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 6: New Methods, AMS II, Applications, Actinides

MS 6.7: Vortrag

Mittwoch, 13. März 2024, 18:45–19:00, HS 3042

Production and characterisation of synthetic homogenous multi-element actinides samples via sol-gel as standards for mass spectrometry — •Aaron Lehnert, Paul Hanemann, Darcy van Eerten, Sandra Reinhard, Tim Schmalz, and Clemens Walther — Institute of Radioecology and Radiation Protection, Leibniz University Hannover, Herrenhäuser Straße 2, 30419 Hannover, Germany

MetroPOEM^[1] is committed to developing SI-traceable mixed element reference materials for the calibration of mass spectrometric devices. In nuclear forensics, elemental selectivity and precise spatially resolved mass spectrometry is essential for ultra-trace analysis of environmental samples. Resonant laser secondary neutral mass spectrometry (rL-SNMS) combines both element selective isotope ratio measurements and spatial resolution on the micrometre scale. Multi-element reference materials are needed to investigate different ionisation efficiencies for the elements important for environmental analytics.

In this work we present a production method of mixed actinide samples such as U, Pu and Am via sol-gel. These samples consist exclusively of the respective metal and fulfil the conditions for homogeneity confirmed by EDX and SIMS. The spatially resolved element distribution was determined using rL-SNMS. ICP-MS is also used to determine the element composition.

^[1]MetroPOEM is a collaboration of 22 partners from 13 countries throughout Europe funded by EURAMET under grant number 21GRD09 https://www.npl.co.uk/euramet/metropoem

Keywords: Resonant laser ionisation; Mass spectrometry; Mixed actinide materials; Sol-gel process; Reference materials