Multi-elemental Nd, Sm, Eu, Gd isotope ratio measurements by stop-flow isotachophoresis coupled to MC-ICPMS

Vio, Laurent; Martelat, Benoît; Isnard, Hélène; Nonell, Anthony; Chartier, Fredéric

doi:10.1016/j.talanta.2017.08.013

Cited by 6 publications

(8 citation statements)

References 35 publications

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“…Comparing the different data treatment methods, better reproducibilities were obtained with the LRS method, particularly when the signal intensity was lower than 5 mV. This observation is in agreement with previous studies performed by hyphenating separative techniques and MC-ICPMS. , …”

Section: Resultssupporting

confidence: 91%

“…This observation is in agreement with previous studies performed by hyphenating separative techniques and MC-ICPMS. 20,27 The U/ 238 U and U/ 238 U isotope ratio values for IRMM and IRMM obtained with the LRS method were in agreement within uncertainty with the certified ratio value of the isotopic standard. For the IRMM 184 standard 236 U/ 238 U ratio was not evaluated considering the very low abundance of 236 U.…”

Section: Mass Bias Correction Approach and Validationsupporting

confidence: 59%

“…The approach was extended in order to perform multielemental Nd, Sm, Eu, and Gd isotope ratio measurements by stop-flow isotachophoresis. This analytical development enabled the isotope ratio measurements, within a single analytical run, of 4 elements and up to 23 isotopes with only 20 ng injected per element with isotope ratio reproducibilities better than 0.4% ( k = 2) and accuracies better than 0.2% . In addition, Martelat et al investigated the isotopic fractionation and evaluated the analytical performances of electrokinetic separations hyphenated with MC-ICPMS for Nd isotope ratio measurements.…”

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confidence: 99%

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Precise U and Pu Isotope Ratio Measurements in Nuclear Samples by Hyphenating Capillary Electrophoresis and MC-ICPMS

et al. 2018

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Precise isotopic and elemental characterization of spent nuclear fuel is a major concern for the validation of the neutronic calculation codes and waste management strategy in the nuclear industry. Generally, the elements of interest, particularly U and Pu which are the two major elements present in spent fuel, are purified by ion exchange or extractant resins before off-line measurements by thermal ionization mass spectrometry. The aim of the present work was to develop a new analytical approach based on capillary electrophoresis (CE) hyphenated to a multicollector inductively coupled plasma mass spectrometer (MC-ICPMS) for online isotope ratio measurements. An electrophoretic separation protocol of U, Pu, and the fraction containing fission products and minor actinides (Am and Cm) was developed using acetic acid as the electrolyte and complexing agent. The instrumentation for CE was designed to be used in a glovebox, and a laboratory-built interface was developed for hyphenation with MC-ICPMS. The separation was realized with only a few nL of a solution of spent nuclear fuel, and the reproducibilities obtained on the U and Pu isotope ratios were on the order of a few ‰ which is comparable to those obtained by thermal ionization mass spectrometry (TIMS). This innovative protocol allowed a tremendous reduction of the analyte masses from μg to ng and also a drastic reduction of the liquid waste production from mL to μL. In addition, the time of analysis was shorted by at least a factor of three. All of these improved parameters are of major interest for nuclear applications.

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Section: Resultssupporting

confidence: 91%

Section: Mass Bias Correction Approach and Validationsupporting

confidence: 59%

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confidence: 99%

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Precise U and Pu Isotope Ratio Measurements in Nuclear Samples by Hyphenating Capillary Electrophoresis and MC-ICPMS

et al. 2018

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“…A multi-collector inductively coupled plasma mass spectrometer (MC-ICPMS) is an elemental analysis instrument with a plasma ion source which can be used for the determination of element content and isotope analyses of samples. Vio et al [42] revealed four lanthanide samples (Nd, Sm, Eu and Gd) that were isotopically characterized by MC-ICPMS. The isotope composition of heavy metals in pollutants can be used to determine the source; then, effective methods can be adopted to remove the pollutants.…”

Section: Characterization Of Graphene-based Nanocompositesmentioning

confidence: 99%

Advances in the Applications of Graphene-Based Nanocomposites in Clean Energy Materials

Xiang

Xin

et al. 2021

Crystals

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Extensive use of fossil fuels can lead to energy depletion and serious environmental pollution. Therefore, it is necessary to solve these problems by developing clean energy. Graphene materials own the advantages of high electrocatalytic activity, high conductivity, excellent mechanical strength, strong flexibility, large specific surface area and light weight, thus giving the potential to store electric charge, ions or hydrogen. Graphene-based nanocomposites have become new research hotspots in the field of energy storage and conversion, such as in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion. Graphene as a catalyst carrier of hydrogen fuel cells has been further modified to obtain higher and more uniform metal dispersion, hence improving the electrocatalyst activity. Moreover, it can complement the network of electroactive materials to buffer the change of electrode volume and prevent the breakage and aggregation of electrode materials, and graphene oxide is also used as a cheap and sustainable proton exchange membrane. In lithium-ion batteries, substituting heteroatoms for carbon atoms in graphene composite electrodes can produce defects on the graphitized surface which have a good reversible specific capacity and increased energy and power densities. In solar cells, the performance of the interface and junction is enhanced by using a few layers of graphene-based composites and more electron-hole pairs are collected; therefore, the conversion efficiency is increased. Graphene has a high Seebeck coefficient, and therefore, it is a potential thermoelectric material. In this paper, we review the latest progress in the synthesis, characterization, evaluation and properties of graphene-based composites and their practical applications in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion.

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“…The level of fractionation was the same for both ITP (LE: 14 mM 2‐hydroxy‐2‐methylbutyric acid, NH 4 Ac, pH 4.5; TE: 15 mM HAc), and CZE (BGE = LE). The same detection method and electrolyte system were used later for multielemental isotope ratio measurements of several lanthanides (Nd, Sm, Eu, and Gd). Between measurements of the individual ITP zones, electromigration was stopped to allow change of the detector parameters and injection of standards using a dual inlet spray chamber.…”

Section: Analytical Applicationsmentioning

confidence: 99%

Recent progress in analytical capillary isotachophoresis

Malá

Gebauer

2018

Electrophoresis

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This review brings a survey of studies on analytical ITP published since 2016 until the first quarter of 2018 and includes chapters about theory and principles, instrumentation and techniques, and analytical applications of ITP. It shows the position of analytical ITP among contemporary separation techniques, where particularly its unique concentrating capabilities keep the interest to include it into novel high-sensitivity analytical procedures. The reviewed papers are considered according to their nature, techniques used, and instrumentation employed. The significance of electrolyte system composition is emphasized by providing explicit values where possible.

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Multi-elemental Nd, Sm, Eu, Gd isotope ratio measurements by stop-flow isotachophoresis coupled to MC-ICPMS

Cited by 6 publications

References 35 publications

Precise U and Pu Isotope Ratio Measurements in Nuclear Samples by Hyphenating Capillary Electrophoresis and MC-ICPMS

Precise U and Pu Isotope Ratio Measurements in Nuclear Samples by Hyphenating Capillary Electrophoresis and MC-ICPMS

Advances in the Applications of Graphene-Based Nanocomposites in Clean Energy Materials

Recent progress in analytical capillary isotachophoresis

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