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Direct assessment of the variations in the intensity ratios of M and L X-ray lines of U in various compounds by total reflection X-ray fluorescence spectrometry.
- Source :
-
Spectrochimica Acta Part B . Mar2023, Vol. 201, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- A systematic study, to assess the variations in the intensity ratios of uranium M and L X-ray lines, was carried out using Total reflection X-Ray Fluorescence (TXRF) spectrometry. In order to establish a co-relation between the variations in the intensity ratios of uranium and its oxidation state, various compounds of uranium having oxidation states of 0, +4, mixed oxide and + 6 were prepared by solid state route. Uranyl nitrate solution was prepared by dissolving powders of U 3 O 8 in nitric acid. The U M lines were excited using monochromatised Cr Kα and the U L lines were excited using monochromatised Rh Kα excitation source. The M- and L- X-ray lines of U were measured using a Silicon Drift Detector (SDD) with a special ultrathin polymer entrance window, AP 3.3, of 300 nm thickness. The intensity ratios of U M lines (Mζ, Mβ and Mγ) with respect to U Mα and U L lines (L l , Lβ and Lη) with respect to Lα were determined experimentally in different compounds of U. Statistical evaluations showed a significant difference in the mean values of the intensity ratios of different oxidation states in uranium. [Display omitted] • Establish co-relation between changes in intensity ratios and oxidation states. • Direct TXRF method for assessment of variations in intensity ratios of U X- rays. • An important application for expansion of XRF for speciation studies. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 05848547
- Volume :
- 201
- Database :
- Academic Search Index
- Journal :
- Spectrochimica Acta Part B
- Publication Type :
- Academic Journal
- Accession number :
- 161843839
- Full Text :
- https://doi.org/10.1016/j.sab.2023.106625