Natural radionuclides in groundwaters
Description
The U-234 and Th-230 radionuclides are highly retarded by factors of 104 to 105 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. 19 refs., 3 figs
Availability note (English)
MF available from INIS under the Report Number; NTIS, PC A03/MF A01 as DE90015286; OSTI; INIS; US Govt. Printing Office Dep.
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Additional details
Publishing Information
- Imprint Pagination
- 14 p.
- Report number
- PNL-SA--17438
Conference
- Title
- 3. international conference on low-level measurements of actinides and long-lived radionuclides in biological and environmental samples.
- Dates
- 29 Jan - 2 Feb 1990.
- Place
- Bombay (India).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21089732
- Subject category
- S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BASALT; BISMUTH 210; BRINES; DAUGHTER PRODUCTS; ENVIRONMENTAL TRANSPORT; GEOCHEMISTRY; GROUND WATER; HANFORD RESERVATION; LEAD 210; NATURAL RADIOACTIVITY; POLONIUM 210; RADIOECOLOGICAL CONCENTRATION; RADIOISOTOPES; RADIONUCLIDE MIGRATION; RADIUM CHLORIDES; RADIUM 224; RADIUM 226; RADIUM 228; RADON 222; TEXAS; THORIUM ISOTOPES; THORIUM 228; THORIUM 230; THORIUM 232; THORIUM 234; URANIUM ISOTOPES; URANIUM 234; URANIUM 238
- Descriptors DEC
- ACTINIDE NUCLEI; ALKALINE EARTH METAL COMPOUNDS; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BISMUTH ISOTOPES; CARBON 14 DECAY RADIOISOTOPES; CHLORIDES; CHLORINE COMPOUNDS; DAYS LIVING RADIOISOTOPES; DEVELOPED COUNTRIES; ECOLOGICAL CONCENTRATION; EVEN-EVEN NUCLEI; HALIDES; HALOGEN COMPOUNDS; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; HYDROGEN COMPOUNDS; IGNEOUS ROCKS; INTERNAL CONVERSION RADIOISOTO; ISOTOPES; LEAD ISOTOPES; MAGNESIUM 28 DECAY RADIOISOTOP; MASS TRANSFER; NATIONAL ORGANIZATIONS; NEON 24 DECAY RADIOISOTOPES; NORTH AMERICA; NUCLEI; ODD-ODD NUCLEI; OXYGEN COMPOUNDS; POLAR SOLVENTS; POLONIUM ISOTOPES; RADIOACTIVITY; RADIUM COMPOUNDS; RADIUM ISOTOPES; RADON ISOTOPES; ROCKS; SOLVENTS; SPONTANEOUS FISSION RADIOISOTO; US DOE; US ORGANIZATIONS; USA; WATER; YEARS LIVING RADIOISOTOPES
Optional Information
- Contract/Grant/Project number
- Contract AC06-76RL01830
- Secondary number(s)
- CONF-900125--1.