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

被引：5
作者：
Shi, Yanlin [1 ]
Zhou, Wanqiang [1 ]
Wang, Jingyi [1 ]
Xian, Dongfan [1 ]
Tan, Zhaoyi [2 ]
Du, Liang [2 ]
Li, Xiaolong [2 ]
Pan, Duoqiang [3 ]
Chen, Zongyuan [3 ]
Wu, Wangsuo [3 ]
Liu, Chunli [1 ]
机构：
[1] Peking Univ, Fundamental Sci Lab Radiochem & Radiat Chem, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
[2] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621000, Sichuan, Peoples R China
[3] Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2021年 / 328卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Uranium(VI); Intrinsic colloidal particles; Calcium uranyl carbonate; Speciation; URANIUM(VI) SORPTION; SPECTROSCOPIC CHARACTERIZATION; FLUORESCENCE SPECTROSCOPY; COMPLEX-FORMATION; FAR-FIELD; SPECIATION; MIGRATION; HYDROLYSIS; SOLUBILITY; CARBONATE;
D O I：
10.1007/s10967-020-07591-x
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
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.
引用
收藏
页码：785 / 794
页数：10
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