Measurement of63Ni in highly radioactive Hanford waste by liquid scintillation counting
| Autor: | Ahmad E. Nevissi, J. H. Kaye, R. S. Strebin |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Ion exchange
Fission Health Toxicology and Mutagenesis Radiochemistry Liquid scintillation counting Public Health Environmental and Occupational Health Radioactive waste Mass spectrometry Pollution Chloride Analytical Chemistry High-level waste chemistry.chemical_compound Dimethylglyoxime Nuclear Energy and Engineering chemistry medicine Radiology Nuclear Medicine and imaging Spectroscopy medicine.drug |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Articles. 180:197-200 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/bf02035906 |
| Popis: | Characterization of high-activity radioactive waste stored in underground tanks at Hanford requires determining63Ni (100 y). This low-energy β-emitter (Emax 67 keV) must be separated with a high degree of radiochemical purity large amounts of other fission and activation products. The method to be discussed involves multiple precipitation steps with several holdback carriers added, followed by precipitations with dimethylglyoxime, ion exchange, and electrodeposition. The59Ni activity is determined by low-energy photon spectrometry. The sample is then stripped from the counting disk with HNO3, converted to the chloride form, and the63Ni β-spectrum is measured with high efficiency by liquid scintillation counting. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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