caa a22 4500 469111771 CHVBK 20180323133113.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF02038341 doi (NATIONALLICENCE)springer-10.1007/BF02038341 Laul J. Pacific Northwest Laboratory, P.O. Box 999, 99352, Richland, Washington, (USA) aut Natural radionuclides in groundwaters [Elektronische Daten] [J. Laul] The234U and230Th 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.210Pb is soluble in SSGF brine, probably as a chloride complex. The234U/230Th 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. Akadémiai Kiadó, 1992 Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 156/2(1992-01-01), 235-242 0236-5731 156:2<235 1992 156 10967 https://doi.org/10.1007/BF02038341 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02038341 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Laul J. Pacific Northwest Laboratory, P.O. Box 999, 99352, Richland, Washington, (USA) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 156/2(1992-01-01), 235-242 0236-5731 156:2<235 1992 156 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer