Rapid microdetermination of scandium and dysprosium in rare-earth-rich materials by neutron activation and gamma-ray spectrometry
Activation analysis was applied to the simultaneous determination of scandium and dysprosium in rare earthrich ores, soil, yttrium oxide, and dilute solutions containing both elements. A sample is irradiated for 30 seconds at a flux of about 4 x 1010 neutrons/sq cm/second and the induced activity is observed with a well-type sodium iodide crystal attached to a 256-channel pulse height analyzer which is operated in two steps to see the decay. The height of photopeak due to 0.142 Mev gamma radiation from scandium-46m and that due to 0.108 Mev gamma from dysprosium-165m are measured. Concentrations down to a few parts per million of each element can be determined.
- Research Organization:
- Government Chemical Industrial Research Inst., Tokyo
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-002975
- OSTI ID:
- 4817441
- Journal Information:
- Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 13 Vol. 33; ISSN 0003-2700
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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