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Junior, O. Pereira de Oliveira; Sarkis, J.E.S.

doi:10.1023/a:1021642122066

Cited by 26 publications

(6 citation statements)

References 7 publications

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“…ent physicochemical bases, which would allow: (1) routine analytical activities based on application of fi rst analytical technique; and (2) verifi cation of the developed procedures and the obtained results with the use of the second technique. Both instrumental neutron activation analysis (INAA) and inductively coupled plasma mass spectrometry (ICP-MS) are widely used in nuclear materials analysis [5][6][7][8][9].…”

Section: Microwave-assisted Total Digestion and Icp-ms Measurementsmentioning

confidence: 99%

Critical comparison of INAA and ICP-MS applied in the characterization of purity of TRISO fuel and substrates to its production

Chajduk

Kalbarczyk

2021

Nukleonika

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The application of inductively coupled plasma mass spectrometry (ICP-MS), both in solution and laser ablation (LA) mode, and instrumental neutron activation analysis (INAA) in the nuclear material analysis are presented in this paper. The possibility of each technique for the chemical characterization of substances used during TRISO fuel production and its advantages and limitations are discussed based on the obtained results of the analysis of real materials used in TRISO fuel production in the Institute of Nuclear Chemistry and Technology. The paper also reports the application of INAA and LA-ICP-MS to the verification of the purity of the protective layers of pyrolytic carbon (PyC) and silicon carbide.

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Section: Microwave-assisted Total Digestion and Icp-ms Measurementsmentioning

confidence: 99%

Critical comparison of INAA and ICP-MS applied in the characterization of purity of TRISO fuel and substrates to its production

Chajduk

Kalbarczyk

2021

Nukleonika

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“…REEs are traditionally measured by inductively coupled plasma-mass spectrometry (ICP-MS) through external calibration with matrix-matched standards. This methodology suffers from complexity due to matrix interferences, lack of matrix-matched certified reference materials, and preparation effects which can increase measurement uncertainty [10,11]. Isotope dilution mass spectrometry (IDMS) is an alternate quantitative approach that can reduce these uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS

et al. 2020

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The determination of trace elements, particularly rare earth elements, in uranium ore concentrates (UOCs) is important as the pattern can be indictive ore characteristics. Presented here is a methodology for accurately quantifying rare earth elements (REE) in UOCs. To improve the measurement uncertainty, isotope dilution mass spectrometry (IDMS) was utilized over other quantification techniques such as external calibration or standard addition. The isotopic determinations were measured by inductively coupled plasma-mass spectrometry (ICP-MS). To obtain high-fidelity isotopic measurements, separation of the REE from the uranium matrix was achieved by high-performance ion chromatography (HPIC), reducing the isobaric interferences. After separation, the target analytes were analyzed in two different modalities. For high precision analysis, the separated analytes were collected and measured by ICP-MS in an “offline” fashion. For a rapid approach, the separated analytes were sent directly into an ICP-MS for “online” analysis. These methods have been demonstrated to accurately quantify the REE content in a well-characterized UOC sample.

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“…They are characterized by high sensitivity, accuracy and precision for many elements. Because of their unique advantages, ICP-MS and NAA are used in the chemical analysis of nuclear fuel to determine the level of impurities [17][18][19][20]. The analytical procedures developed in this paper are based on these techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of Analytical Procedures for Chemical Characterization of Substrates for the Production of TRISO Coated Particles as Nuclear Fuel in High Temperature Gas-Cooled Reactors

et al. 2020

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High temperature gas-cooled reactors have recently gained importance as a source of electricity and process heat. Nuclear fuel used in these reactors consists of TRISO (TRiple coated ISOtropic) coated particles, where spherical grains of UO2 or UC2 or UCO kernel are covered with four successive layers consisting of pyrolytic carbon and silicon carbide. Of great importance is the chemical purity of reagents and substances used for the production of TRISO coated fuel particles. Analytical techniques ensuring the determination of elements at trace levels are inductively coupled plasma mass spectrometry (ICP-MS) and neutron activation analysis (NAA). They were applied in this work for the chemical characterization of substrates used for TRISO fuel production. Two analytical procedures were developed: the first, where materials are analyzed using ICP-MS, and the second with the aid of NAA. Successive stages of these procedures are described with details. Results of quantitative chemical analysis of examined substances are reported as well as detection limits for the investigated elements. Moreover, the expanded uncertainties estimated for the determined elements while employing the devised analytical procedures are presented.

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Untitled

Cited by 26 publications

References 7 publications

Critical comparison of INAA and ICP-MS applied in the characterization of purity of TRISO fuel and substrates to its production

Critical comparison of INAA and ICP-MS applied in the characterization of purity of TRISO fuel and substrates to its production

Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS

Development of Analytical Procedures for Chemical Characterization of Substrates for the Production of TRISO Coated Particles as Nuclear Fuel in High Temperature Gas-Cooled Reactors

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