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Quantitative and isotopic analysis of single micrometer-sized uranium particles using multiple mass spectrometric techniques. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08683-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Mathew CE, Rai VK, Ottenfeld C, Keller R. Effect of weighing uncertainty on assay values by isotope dilution mass spectrometry. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07646-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Essex RM, Williams RW, Rogers KT, Hexel CR, Parsons-Davis T, Treinen KC. A new highly enriched 233U reference material for improved simultaneous determination of uranium amount and isotope amount ratios in trace level samples. Talanta 2020; 221:121638. [PMID: 33076158 DOI: 10.1016/j.talanta.2020.121638] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 11/30/2022]
Abstract
A highly-enriched 233U reference material (>0.99987 n(233U)/n(U)) has been prepared and characterized for use as an isotope dilution mass spectrometry spike. An ion exchange separation was performed on 1 g of high purity 233U to further reduce trace amounts of contaminant Pu in the material. The purified 233U was then prepared as a master solution which was analyzed for molality of uranium by modified Davies and Gray titration. A portion of the master solution was quantitatively diluted and dispensed for reference material units. Selected units were analyzed for verification of uranium amount and to characterize uranium isotope amount ratios by multi-collector inductively couple plasma mass spectrometry. Modelling of spike-corrected isotopic data show that the new spike will enable simultaneous measurements of uranium amount and isotope amount ratios with resulting uncertainties that are substantially less sensitive to over spiking than widely used 233U certified reference materials.
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Affiliation(s)
- Richard M Essex
- National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8462, Gaithersburg, MD, 20899, USA.
| | - Ross W Williams
- Lawrence Livermore National Laboratory, P.O. Box 808, L-231, Livermore, CA, 94551-0808, USA
| | - Kayron T Rogers
- Oak Ridge National Laboratory, Chemical Sciences Division, 1 Bethel Valley Road, Oak Ridge, TN, 37830, USA
| | - Cole R Hexel
- Oak Ridge National Laboratory, Chemical Sciences Division, 1 Bethel Valley Road, Oak Ridge, TN, 37830, USA
| | - Tashi Parsons-Davis
- Lawrence Livermore National Laboratory, P.O. Box 808, L-231, Livermore, CA, 94551-0808, USA
| | - Kerri C Treinen
- Lawrence Livermore National Laboratory, P.O. Box 808, L-231, Livermore, CA, 94551-0808, USA
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Zhang L, Xiong P, Zhang H, Chen L, Xu J, Wu H, Qin Z. Graphene Oxide Carburization Enhanced Ionization Efficiency for TIMS Isotope Ratio Analysis of Uranium at Trace Level. Anal Chem 2019; 91:7215-7225. [PMID: 31082218 DOI: 10.1021/acs.analchem.9b00543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Isotope analysis of trace uranium is important in nuclear safeguards and nuclear forensics, which requires the analytical methodologies with high sensitivity, accuracy, and precision. As one of the most powerful techniques in isotopic measurement, thermal ionization mass spectrometry (TIMS) usually suffers from its relatively low sensitivity in ultratrace measurements. To overcome this limitation, we have developed a new filament carburization technique for TIMS, with graphene oxide (GO) as the ionization enhancer. A high and steady ionization efficiency of ∼0.2% for uranium was achieved in single-filament mode, which was 10× the classical double-filament method. With total evaporation (TE) measurements, this method was validated with certified reference materials (CRMs) at the picogram level, and the relative uncertainties for n(235U)/ n(238U) were as low as the ∼1% level. The enhancement mechanism of GO's promoting effect on uranium ionization was attributed to the uniform microstructure facilitating energy transfer and formation of carbides. This approach provides an alternative simple and rapid method for trace uranium isotope analysis with high sensitivity and excellent repeatability. Filament carburization and uranium loading could be accomplished within 10 min. This technique has great advantage in analysis of trace uranium isotope ratios and can be applied in the researches of environmental analysis and nuclear forensics.
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Affiliation(s)
- Ling Zhang
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
| | - Penghui Xiong
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
| | - Hailu Zhang
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
| | - Lumin Chen
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
| | - Jie Xu
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
| | - Haoxi Wu
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
| | - Zhen Qin
- Institute of Materials , China Academy of Engineering Physics , Mianyang , 621900 , China
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Middendorp R, Klinkenberg M, Dürr M. Uranium oxide microparticle suspensions for the production of reference materials for micro-analytical methods. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6076-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Middendorp R, Dürr M, Knott A, Pointurier F, Ferreira Sanchez D, Samson V, Grolimund D. Characterization of the Aerosol-Based Synthesis of Uranium Particles as a Potential Reference Material for Microanalytical Methods. Anal Chem 2017; 89:4721-4728. [DOI: 10.1021/acs.analchem.7b00631] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. Middendorp
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research - Nuclear Waste Management and Reactor Safety (IEK-6), D-52428 Jülich, Germany
| | - M. Dürr
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research - Nuclear Waste Management and Reactor Safety (IEK-6), D-52428 Jülich, Germany
| | - A. Knott
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research - Nuclear Waste Management and Reactor Safety (IEK-6), D-52428 Jülich, Germany
| | | | | | - V. Samson
- Swiss
Light Source, Paul-Scherrer-Institute, CH-5232 Villigen, Switzerland
| | - D. Grolimund
- Swiss
Light Source, Paul-Scherrer-Institute, CH-5232 Villigen, Switzerland
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Park JH, Choi EJ. Simultaneous determination of the quantity and isotopic ratios of uranium in individual micro-particles by isotope dilution thermal ionization mass spectrometry (ID-TIMS). Talanta 2016; 160:600-606. [PMID: 27591656 DOI: 10.1016/j.talanta.2016.08.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 07/27/2016] [Accepted: 08/01/2016] [Indexed: 11/17/2022]
Abstract
A method to determine the quantity and isotopic ratios of uranium in individual micro-particles simultaneously by isotope dilution thermal ionization mass spectrometry (ID-TIMS) has been developed. This method consists of sequential sample and spike loading, ID-TIMS for isotopic measurement, and application of a series of mathematical procedures to remove the contribution of uranium in the spike. The homogeneity of evaporation and ionization of uranium content was confirmed by the consistent ratio of n((233)U)/n((238)U) determined by TIMS measurements. Verification of the method was performed using U030 solution droplets and U030 particles. Good agreements of resulting uranium quantity, n((235)U)/n((238)U), and n((236)U)/n((238)U) with the estimated or certified values showed the validity of this newly developed method for particle analysis when simultaneous determination of the quantity and isotopic ratios of uranium is required.
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Affiliation(s)
- Jong-Ho Park
- Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero-989, Yuseong-gu, Daejeon, 34057 Republic of Korea.
| | - Eun-Ju Choi
- Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero-989, Yuseong-gu, Daejeon, 34057 Republic of Korea
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Precise and accurate uranium isotope analysis by modified total evaporation using 1013 ohm current amplifiers. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4400-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ivanova B, Spiteller M. Uranyl-water-containing complexes: solid-state UV-MALDI mass spectrometric and IR spectroscopic approach for selective quantitation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:1548-1563. [PMID: 23942998 DOI: 10.1007/s11356-013-1892-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 05/30/2013] [Indexed: 06/02/2023]
Abstract
Since primary environmental concept for long storage of nuclear waste involved assessment of water in uranium complexes depending on migration processes, the paper emphasized solid-state matrix-assisted laser desorption/ionization (MALDI) mass spectrometric (MS) and IR spectroscopic determination of UO2(NO3)2·6H2O; UO2(NO3)2·3H2O, α-, β-, and γ-UO3 modifications; UO3·xH2O (x = 1 or 2); UO3·H2O, described chemically as UO2(OH)2, β- and γ-UO2(OH)2 modifications; and UO4·2H2O, respectively. Advantages and limitation of vibrational spectroscopic approach are discussed, comparing optical spectroscopic data and crystallographic ones. Structural similarities occurred in α-γ modifications of UO3, and UO2(OH)2 compositions are analyzed. Selective speciation achieved by solid-state mass spectrometry is discussed both in terms of its analytical contribution for environmental quality assurance and assessment of radionuclides, and fundamental methodological interest related the mechanistic complex water exchange of UO3·H2O forms in the gas phase. In addition to high selectivity and precision, UV-MALDI-MS, employing an Orbitrap analyzer, was a method that provided fast steps that limited sample pretreatment techniques for direct analysis including imaging. Therefore, random and systematic errors altering metrology and originating from the sample pretreatment stages in the widely implemented analytical protocols for environmental sampling determination of actinides are significantly reduced involving the UV-MALDI-Orbitrap-MS method. The method of quantum chemistry is utilized as well to predict reliably the thermodynamics and nature of U-O bonds in uranium species in gas and condensed phases.
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Affiliation(s)
- Bojidarka Ivanova
- Lehrstuhl für Analytische Chemie, Institut für Umweltforschung, Fakultät für Chemie, Universität Dortmund, Otto-Hahn-Strasse 6, 44227, Dortmund, Nordrhein-Westfalen, Germany,
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