Concentration of uranium series nuclides in soil particles in relation to their size
Soil was separated according to particle size, and the concentrations of the uranium series nuclides /sup 238/U, /sup 230/Th, /sup 226/Ra, and /sup 210/Pb in each size-separated fraction were determined by ..gamma.. ray spectrometry with Ge(Li) detectors. The activity ratios of /sup 230/Th, /sup 226/Ra, and /sup 210/Pb to /sup 238/U were larger than unity in all fractions. The activity ratio of /sup 230/Th to /sup 238/U was unexpectedly high, reaching 3--5. In the particle size range below 0.1 mm the concentrations of these uranium series nuclides were found to increase with decrease in particle size. Such a trend was also found for the elements Fe, Mn, Zn, and Cu. The elements K and Ca, however, were found to have a direct correlation with particle size. (AIP)
- Research Organization:
- Radiation Center of Osaka Prefecture, Sakai, Osaka, Japan
- OSTI ID:
- 7337494
- Journal Information:
- J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 82:2; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
EVEN-EVEN NUCLEI
GEOLOGIC DEPOSITS
HEAVY NUCLEI
ISOTOPES
LEAD 210
LEAD ISOTOPES
NUCLEI
PARTICLE SIZE
RADIOACTIVITY
RADIOISOTOPES
RADIUM 226
RADIUM ISOTOPES
SIZE
THORIUM 230
THORIUM ISOTOPES
URANIUM 238
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES