Characterization of the Aerosol-Based Synthesis of Uranium Particles as a Potential Reference Material for Microanalytical Methods
| Autor: | M. Dürr, Daniel Grolimund, D. Ferreira Sanchez, Ronald Middendorp, Alexander Knott, V.A. Samson, F. Pointurier |
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| Rok vydání: | 2017 |
| Předmět: |
Aerosol spray
010401 analytical chemistry Oxide Analytical chemistry chemistry.chemical_element Uranium 010403 inorganic & nuclear chemistry Mass spectrometry 01 natural sciences Synchrotron 0104 chemical sciences Analytical Chemistry law.invention Aerosol chemistry.chemical_compound chemistry law ddc:540 Particle Uranium oxide |
| Zdroj: | Analytical chemistry 89(8), 4721–4728 (2017). doi:10.1021/acs.analchem.7b00631 |
| ISSN: | 1520-6882 0003-2700 |
| DOI: | 10.1021/acs.analchem.7b00631 |
| Popis: | A process for production of micrometer-sized particles composed of uranium oxide using aerosol spray pyrolysis is characterized with respect to the various production parameters. The aerosol is generated using a vibrating orifice aerosol generator providing monodisperse droplets, which are oxidized in a subsequent heat treatment. The final particles are characterized with microanalytical methods to determine size, shape, internal morphology, and chemical and structural properties in order to assess the suitability of the produced particles as a reference material for microanalytical methods, in particular, for mass spectrometry. It is demonstrated that physicochemical processes during particle formation and the heat treatment to chemically transform particles into an oxide strongly influence the particle shape and the internal morphology. Synchrotron μ-X-ray based techniques combined with μ-Raman spectroscopy have been applied to demonstrate that the obtained microparticles consist of a triuranium octoxide phase. Our studies demonstrate that the process is capable of delivering spherical particles with determined uniform size and elemental as well as chemical composition. The particles therefore represent a suitable base material to fulfill the homogeneity and stability requirements of a reference material for microanalytical methods applied in, for example, international safeguards or nuclear forensics. |
| Databáze: | OpenAIRE |
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