Back to Search
Start Over
Determination of Uranium Distribution in Amino Phosphonic Acid Chelating Resin by LA-ICP-MS
- Source :
- He huaxue yu fangshe huaxue, Vol 45, Iss 4, Pp 323-331 (2023)
- Publication Year :
- 2023
- Publisher :
- Editorial Office of Journal of Nuclear and Radiochemistry, 2023.
-
Abstract
- In this paper, based on the research background of recovering uranium from wet-process phosphoric acid(WPA) by amino phosphonate acid chelating resin, the distribution of uranium in single particle amino phosphonate chelating resin was studied. The results show that the optimal laser frequency of LA-ICP-MS is determined to be 6 Hz, the beam spot diameter is 44 μm, and the energy density is 6 J/cm2. The resin with saturated adsorption and the resin with complete elution were selected as the external standard of the adsorption and leaching process, and the homogeneity test was carried out. The relative standard deviation of uranium content in the resin with saturated adsorption and the resin with complete elution are 3.87% and 3.52%(n=9), respectively. Uniformity is good. In situ microzone analysis of uranium in amino phosphonic acid chelating resin was carried out by LA-ICP-MS. The adsorption process of uranium on the resin is gradually completed from the outside to the inside, and the leaching process is gradually completed from the outside to the inside, and the concentration of uranium inside and outside the resin is gradually uniform and unified, and finally reaches adsorption saturation and leaching complete.
Details
- Language :
- Chinese
- ISSN :
- 02539950
- Volume :
- 45
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- He huaxue yu fangshe huaxue
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.566a64389b1a4de990c2f45610032808
- Document Type :
- article
- Full Text :
- https://doi.org/10.7538/hhx.2023.YX.2022083