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

被引：0
|
作者：
Yanlin Shi
Wanqiang Zhou
Jingyi Wang
Dongfan Xian
Zhaoyi Tan
Liang Du
Xiaolong Li
Duoqiang Pan
Zongyuan Chen
Wangsuo Wu
Chunli Liu
机构：
[1] Peking University,Beijing National Laboratory for Molecular Sciences, Fundamental Science Laboratory on Radiochemistry & Radiation Chemistry, College of Chemistry and Molecular Engineering
[2] China Academy of Engineering Physics,Institute of Nuclear Physics and Chemistry
[3] Lanzhou University,Radiochemistry Laboratory, School of Nuclear Science and Technology
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2021年 / 328卷
关键词：
Uranium(VI); Intrinsic colloidal particles; Calcium uranyl carbonate; Speciation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：785 / 794
页数：9
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