NATURAL RADIONUCLIDES IN GROUNDWATERS

被引：26

作者：

LAUL, JC

机构：

[1] Pacific Northwest Laboratory, Richland, 99352, Washington

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1992年 / 156卷 / 02期

关键词：

D O I：

10.1007/BF02038341

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The U-234 and Th-230 radionuclides are highly retarded by factors of 10(4) to 10(5) in basalt groundwater (Hanford) and briny groundwaters from Texas, and geothermal brine from the Salton Sea Geothermal Field (SSGF). In basalt groundwaters (low ionic strength), Ra is highly sorbed, while in brines (high ionic strength), Ra is soluble. This is probably because the sorption sites are saturated with Na+ and Cl- ions, and RaCl2 is soluble in brines. Pb-210 is soluble in SSGF brine, probably as a chloride complex. The U-234/Th-230 ratios in basalt groundwaters and brines from Texas and SSGF are nearly unity, indicating that U is in the +4 state, suggesting a reducing environment for these aquifers.

引用

页码：235 / 242

页数：8

共 19 条

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[12]

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[13]

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[14]

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