Uranium speciation in waters of different uranium mining areas

被引：117

作者：

Bernhard, G ^{[1
]}

Geipel, G ^{[1
]}

Brendler, V ^{[1
]}

Nitsche, H ^{[1
]}

机构：

[1] Forschungszentrum Rossendorf EV, Inst Radiochem, D-01413 Dresden, Germany

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 271卷

关键词：

uranium; speciation; natural aquatic system; time-resolved laser-induced fluorescence spectroscopy; complexation;

D O I：

10.1016/S0925-8388(98)00054-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The uranium speciation in three uranium mining-related waters from Saxony/Germany was experimentally determined by laser spectroscopy. The obtained species distributions were successfully compared with modeling predictions for the different U(VI) species that were calculated with the modeling software EQ3/6 using the NEA data base [1,2]. Three different solution complexes characterize the uranium speciation in the investigated waters: 1. In carbonate- and calcium-containing mine water from Schlema at pH 7.1, Ca2UO2(CO3)(3) (aq.); 2. In carbonate-containing and calcium-poor tailing water from Helmsdorf at pH 9.8, UO2(CO3)(3)(4-) 3. In sulfate-rich mine water from Konigstein at pH 2.6, UO2SO4 (aq.). (C) 1998 Elsevier Science S.A.

引用

页码：201 / 205

页数：5