Determination of spallation and fission products in UO{sub 2} and ThO{sub 2} targets by FI-ICP-MS and HPLC-ICP-MS
- Paul Schemer Institut, Villigen (Switzerland)
The current paper gives a summary of the mass spectrometric analysis of the irradiated and non-irradiated UO{sub 2} and ThO{sub 2} targets using a nuclear version ICP-MS in a glove-box. To compensate for nonspectroscopic interferences caused by a large excess of uranium and thorium compensate for nonspectroscopic interferences caused by a large excess or uranium and thorium in the matrix and to reduce sample size, and automatic flow-injection system (FI) and a high-performance liquid chromatography (HPLC) system enclosed in a glove box were connected to the ICP-MS. The operating condition and FI analyses parameter were optimized. As high uranium concentrations suppress strongly the signal of trace elements in an ICP-MS, the separation method was evaluated to elute uranium first. By the introduction of a post column valve, the uranium fraction was directly passed to the waste. In this way, the instrument was not exposed to high amounts of dissolved solid, and better detection limits could be reached. About 220 mg of the non-irradiated and irradiated highly radioactive samples were dissolved in ml 65% HNO{sub 3}, ThO{sub 2} in 65% HNO{sub 3}, with 1.5 mMol (NH{sub 4}){sub 2}SiF{sub 6}. Diluted solutions were analyzed for isotopes in the mass-range between 55-230 a.m.u. for U and 55-240 a.m.u. for Th. The concentrations of the spallation and fission products were determined semiquantitatively. The experimental results are in reasonable agreement with the predicted values from the theoretical calculations.
- OSTI ID:
- 273543
- Report Number(s):
- CONF-960113-; TRN: 96:002920-0002
- Resource Relation:
- Conference: 9. biennial Winter conference on plasma spectrochemistry, Fort Lauderdale, FL (United States), 8-13 Jan 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 Winter conference on plasma spectrochemistry; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
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