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Natural radionuclides in groundwaters

Conference ·
OSTI ID:6700305
The U-234 and Th-230 radionuclides are highly retarded by factors of 10{sup 4} to 10{sup 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{sup +} and Cl{sup {minus}} ions and RaCl{sub 2} 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.
Research Organization:
Pacific Northwest Lab., Richland, WA (USA)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
AC06-76RL01830
OSTI ID:
6700305
Report Number(s):
PNL-SA-17438; CONF-900125--1; ON: DE90015286
Country of Publication:
United States
Language:
English

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Related Subjects

54 ENVIRONMENTAL SCIENCES
540330* -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- (1990-)
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
BASALT
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BISMUTH 210
BISMUTH ISOTOPES
BRINES
CARBON 14 DECAY RADIOISOTOPES
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DAUGHTER PRODUCTS
DAYS LIVING RADIOISOTOPES
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
FEDERAL REGION VI
GEOCHEMISTRY
GROUND WATER
HALIDES
HALOGEN COMPOUNDS
HANFORD RESERVATION
HEAVY ION DECAY RADIOISOTOPES
HEAVY NUCLEI
HYDROGEN COMPOUNDS
IGNEOUS ROCKS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD 210
LEAD ISOTOPES
MAGNESIUM 28 DECAY RADIOISOTOPES
MASS TRANSFER
NANOSEC LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NATURAL RADIOACTIVITY
NEON 24 DECAY RADIOISOTOPES
NORTH AMERICA
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
POLONIUM 210
POLONIUM ISOTOPES
RADIOACTIVITY
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
RADIONUCLIDE MIGRATION
RADIUM 224
RADIUM 226
RADIUM 228
RADIUM CHLORIDES
RADIUM COMPOUNDS
RADIUM ISOTOPES
RADON 222
RADON ISOTOPES
ROCKS
TEXAS
THORIUM 228
THORIUM 230
THORIUM 232
THORIUM 234
THORIUM ISOTOPES
URANIUM 234
URANIUM 238
URANIUM ISOTOPES
US DOE
US ERDA
US ORGANIZATIONS
USA
VOLCANIC ROCKS
WATER
YEARS LIVING RADIOISOTOPES