Strontium-90 determinations by Cerenkov radiation counting for well monitoring at Oak Ridge National Laboratory
A rapid method for determination of /sup 90/Sr (28.8 y half-life) via its daughter /sup 90/Y (64.1 h half-life) in aqueous samples from the solid low-level radioactive waste disposal areas at the Oak Ridge National Laboratory (ORNL) utilized the principle of direct Cerenkov radiation counting. This technique is applicable for beta particles exhibiting maximum energies greater than 0.42 pJ (263 keV) in aqueous solution. In the presence of other contributing energetic beta emitters the technique may serve as a useful screening method to distinguish low activity samples from more moderate or higher activity concentrations. A comparison between analysis of /sup 90/Sr by Cerenkov radiation counting and by standard wet chemical separation techniques indicated a high degree of correlation and excellent agreement. The detection limit for a 20-mL sample under the prescribed experimental conditions and a counting interval of 20 min was approximately 0.2 dpm/mL (0.1 pCi/mL).
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6396402
- Report Number(s):
- ORNL/TM-7760; ON: DE81025853; TRN: 81-012252
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
RADIOACTIVE WASTE DISPOSAL
RADIATION MONITORING
STRONTIUM 90
CHERENKOV COUNTING
BETA DETECTION
CHERENKOV RADIATION
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
LOW-LEVEL RADIOACTIVE WASTES
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLID WASTES
WELLS
YTTRIUM 90
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLE DETECTION
CHEMICAL ANALYSIS
COUNTING TECHNIQUES
DATA
DAYS LIVING RADIOISOTOPES
DETECTION
ELECTROMAGNETIC RADIATION
EVEN-EVEN NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MANAGEMENT
MATERIALS
MONITORING
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
RADIATION DETECTION
RADIATIONS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
STRONTIUM ISOTOPES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
YEARS LIVING RADIOISOTOPES
YTTRIUM ISOTOPES
400103* - Radiometric & Radiochemical Procedures- (-1987)
053000 - Nuclear Fuels- Environmental Aspects
520301 - Environment
Aquatic- Radioactive Materials Monitoring & Transport- Water- (1987)