Effect of pH on the formation of U(VI) colloidal particles in a natural groundwater

Effect of pH on the formation of U(VI) colloidal particles in a natural groundwater

U(VI) was found to form intrinsic colloids in the natural groundwater. Fluorescence spectra, TEM, SEM techniques and thermodynamic calculation were used to identify the species of U(VI) and characterize the intrinsic uranium colloidal particles in the groundwater. The effect of pH on the formation o...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2021-06, Vol.328 (3), p.785-794
Hauptverfasser: Shi, Yanlin, Zhou, Wanqiang, Wang, Jingyi, Xian, Dongfan, Tan, Zhaoyi, Du, Liang, Li, Xiaolong, Pan, Duoqiang, Chen, Zongyuan, Wu, Wangsuo, Liu, Chunli
Format: Artikel
Sprache:eng
Schlagworte:
Calcium carbonate
Chemistry
Chemistry and Materials Science
Colloids
Crystals
Diagnostic Radiology
Fluorescence
Groundwater
Hadrons
Heavy Ions
Hydrogen-ion concentration
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Thermodynamics
Uranium
Water, Underground
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Zusammenfassung:U(VI) was found to form intrinsic colloids in the natural groundwater. Fluorescence spectra, TEM, SEM techniques and thermodynamic calculation were used to identify the species of U(VI) and characterize the intrinsic uranium colloidal particles in the groundwater. The effect of pH on the formation of U(VI) colloidal particles was studied. It was found that under near-neutral and strong alkaline conditions, several elements, mainly Ca, Na and Si were responsible for the formation of intrinsic U(VI) colloid, and under weak alkaline conditions, U(VI) colloidal particles were not formed due to the formation of calcium uranyl carbonate complex.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-020-07591-x