Measurement of uranium series radionuclides in rock and groundwater at the Koongarra ore deposit, Australia, by gamma spectrometry
- Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan)
Gamma spectrometry without any self-absorption correction was developed to measure low energy gamma rays emitted by uranium and actinium series radionuclides in rock samples and groundwater residues collected at the Koongarra ore deposit, Australia. Thin samples were prepared to minimize the self-absorption by uranium in the samples. The present method gave standard deviations of 0.9 to 18% for the measurements of concentrations of uranium and actinium series radionuclides. The concentrations of {sup 238}U, {sup 230}Th and {sup 235}U measured by gamma spectrometry were compared with those by alpha spectrometry that requires a complicated chemical separation procedure. The results obtained by both methods were in fairly good agreement, and it was found that the gamma spectrometry is applicable to rock and groundwater samples having uranium content sup to 8.1% (10{sup 3} B1/g) and 3 Bq/l of {sup 238}U, respectively. The detection limits were calculated to be of the order of 10{sup {minus}2} Bq/g for rock samples and 10{sup {minus}1} Bq/l for groundwater samples. The concentrations of uranium and actinium series radionuclides can be determined precisely in these samples using gamma spectrometry without any self-absorption correction.
- OSTI ID:
- 382905
- Report Number(s):
- CONF-941075-; ISBN 1-55899-253-7; TRN: 96:025797
- Resource Relation:
- Conference: 18. international symposium on the scientific basis for nuclear waste management, Kyoto (Japan), 23-27 Oct 1994; Other Information: PBD: 1995; Related Information: Is Part Of Scientific basis for nuclear waste management 18. Part 2; Murakami, Takashi [ed.] [Ehime Univ., Matsuyama, Ehime (Japan). Dept. of Earth Sciences]; Ewing, R.C. [ed.] [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Earth and Planetary Sciences]; PB: 690 p.; Materials Research Society symposium proceedings, Volume 353
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
AUSTRALIA
URANIUM DEPOSITS
GEOCHEMICAL SURVEYS
RADIOACTIVE WASTE FACILITIES
RADIONUCLIDE MIGRATION
RESERVOIR ROCK
GAMMA SPECTROSCOPY
GROUND WATER
URANIUM 238
THORIUM 230
URANIUM 235
RADIOACTIVE WASTE DISPOSAL
RADIUM 226
LEAD 210
RADON 222
URANIUM 234
THORIUM 234
LEAD 214
BISMUTH 214
PROTACTINIUM 231
DISTRIBUTION
EXPERIMENTAL DATA