Methodology for the determination of environmental /sup 129/I and /sup 99/Tc
Conference
·
OSTI ID:6699609
The Savannah River Laboratory is using existing techniques and developing new methodology to determine the environmental impact of the Savannah River Plant with regard to /sup 129/I and /sup 99/Tc. /sup 129/I is determined by neutron activation after the method of Brauer. Activation products are quantified by ..gamma..-ray spectroscopy (Ge(Li)) following chemical isolation. /sup 125/I is used as a yield tracer. /sup 129/I amounts as low as 3.8 fCi can be determined with 30-minute counting times. An isotope dilution method for /sup 99/Tc based on a three-stage surface ionization mass spectrometer is being developed. Its chemical isolation scheme ends with the Tc loaded on a single ion-exchange bead for enhanced mass-spectrometric sensitivity. /sup 97/Tc will be used as a yield tracer. A lower limit of 0.2 fCi is sought. A modified method using liquid scintillation counting has determined /sup 99/Tc in some aqueous samples. These methods have confirmed that /sup 129/I and /sup 99/Tc can be highly mobile in the aqueous environment, establishing the need for monitoring.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
- DOE Contract Number:
- EY-76-C-09-0001
- OSTI ID:
- 6699609
- Report Number(s):
- DP-MS-77-75; CONF-780719-2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
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400103* -- Radiometric & Radiochemical Procedures-- (-1987)
ACTIVATION ANALYSIS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
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ENVIRONMENTAL IMPACTS
ENVIRONMENTAL TRANSPORT
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
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ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
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MASS TRANSFER
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NATIONAL ORGANIZATIONS
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ODD-EVEN NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION MONITORING
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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
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400103* -- Radiometric & Radiochemical Procedures-- (-1987)
ACTIVATION ANALYSIS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL TRANSPORT
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IODINE 129
IODINE ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPE DILUTION
ISOTOPES
MASS SPECTROSCOPY
MASS TRANSFER
MONITORING
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION MONITORING
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SAVANNAH RIVER PLANT
SPECTROSCOPY
TECHNETIUM 99
TECHNETIUM ISOTOPES
TRACER TECHNIQUES
US AEC
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES