Hélène ISNARD

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Publications

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Production of radioactive traceable reference materials for measuring radioactive pollutants in the environment

Lucille Chambon , S. Gupta , H. Isnard , Sylvie Pierre , Benoit Sabot et al.
Applied Radiation and Isotopes, 2025, 226, pp.112204. ⟨10.1016/j.apradiso.2025.112204⟩
Article dans une revue cea-05325111 v1
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Certification of a new plutonium metal reference material: the CETAMA MP4 standard

Sébastien Picart , Marielle Crozet , Giacomo Canciani , Ygor Davrain , Caroline Bertorello et al.
Journal of Radioanalytical and Nuclear Chemistry, 2025, 334 (5), pp.3639-3660. ⟨10.1007/s10967-025-10093-3⟩
Article dans une revue cea-05114690 v1
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Immobilization of controlled Pu:Am ratio on actinide-specific affinity monolith support developed in capillary and coupled to inductively coupled plasma mass spectrometry

Sandra Barhoum , Marta Garcia Cortes , Marine Boudias , Mohamed Guerrouache , Hélène Isnard et al.
Microchimica Acta, 2024, 191, pp.191. ⟨10.1007/s00604-024-06274-8⟩
Article dans une revue cea-04523983 v1

Maximized Lanthanide Extraction Using Supercritical CO2 and Fluorinated Organophosphate Extractants

Yuemin Deng , Dong Xia , Damien Bourgeois , Daniel Meyer , Stéphane Campidelli et al.
ACS Sustainable Resource Management, 2024, 1 (8), pp.1780-1790. ⟨10.1021/acssusresmgt.4c00122⟩
Article dans une revue cea-04681827 v1
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Innovative ICP-MS/MS Method To Determine the $^{135}$Cs/$^{137}$Cs Ratio in Low Activity Environmental Samples

Anaelle Magre , Beatrice Boulet , Hélène Isnard , Sebastien Mialle , Olivier Evrard et al.
Analytical Chemistry, 2023, 95 (17), pp.6923-6930. ⟨10.1021/acs.analchem.3c00207⟩
Article dans une revue cea-04074490 v1
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Determining the selectivity of a tetra-phosphorylated biomimetic peptide towards uranium in the presence of competing cations through the simultaneous coupling of HILIC to ESI-MS and ICP-MS

Lana Abou Zeid , Albert Pell , Marta Garcia Cortes , Hélène Isnard , Pascale Delangle et al.
Analytical and Bioanalytical Chemistry, 2023, 415, pp.6107-6115. ⟨10.1007/s00216-023-04884-4⟩
Article dans une revue cea-04190954 v1
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Determination of the affinity of biomimetic peptides for uranium through the simultaneous coupling of HILIC to ESI-MS and ICP-MS

Lana Abou Zeid , Albert Pell , Marta Garcia Cortes , Hélène Isnard , Pascale Delangle et al.
Analytica Chimica Acta, 2023, 1242, pp.340773. ⟨10.1016/j.aca.2022.340773⟩
Article dans une revue cea-03940809 v1
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Separation and isotope ratio measurements of actinides and lanthanides in spent nuclear fuel samples by CE-MC-ICP-MS

Erwan Dupuis , Hélène Isnard , Frédéric Chartier
Journal of Analytical Atomic Spectrometry, 2022, 37 (11), pp.2340 - 2350. ⟨10.1039/d2ja00265e⟩
Article dans une revue hal-04661822 v1
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Determination of $^{144}$Ce/$^{238}$U atom ratio in spent nuclear fuel using double spike isotope dilution mass spectrometry.

Aurélien Beaumais , Anthony Nonell , Céline Caussignac , Sébastien Mialle , Guillaume Stadelmann et al.
Journal of Analytical Atomic Spectrometry, 2022, 37, pp.1288-1297. ⟨10.1039/d2ja00052k⟩
Article dans une revue cea-04399346 v1
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A new method for determining $^{236}$U/$^{238}$U isotope ratios in environmental samples by means of ICP-MS/MS

Silvia Diez-Fernández , Hugo Jaegler , Carole Bresson , Frédéric Chartier , O. Evrard et al.
Talanta, 2020, 206, pp.120221. ⟨10.1016/j.talanta.2019.120221⟩
Article dans une revue cea-02610582 v1
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Radionuclide analysis using collision–reaction cell ICP-MS technology: a review

Silvia Diez-Fernández , Hélène Isnard , Anthony Nonell , Carole Bresson , Frédéric Chartier
Journal of Analytical Atomic Spectrometry, 2020, 35 (12), pp.2793-2819. ⟨10.1039/d0ja00211a⟩
Article dans une revue cea-05384944 v1
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Hyphenation of capillary electrophoresis with MC-ICP-MS – A novel tool for uranium age dating

Erwan Dupuis , Hélène Isnard , Charles Evette , Frédéric Chartier
Talanta, 2020, 219, pp.121345. ⟨10.1016/j.talanta.2020.121345⟩
Article dans une revue hal-03492132 v1
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Measurement of the absolute gamma-ray emission intensities from the decay of 147Nd

Mark Kellett , L. Vio , Christophe Bobin , Laurine Brondeau , Mikael Cardot-Martin et al.
Applied Radiation and Isotopes, 2020, Special issue : 22nd International Conference on Radionuclide Metrology and its Applications, (ICRM 2019) 27 to 31 May 2019, Salamanca, Spain, 166, pp.109349. ⟨10.1016/j.apradiso.2020.109349⟩
Article dans une revue cea-03043636 v1
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Reconstruction of uranium and plutonium isotopic signatures in sediment accumulated in the Mano Dam reservoir, Japan, before and after the Fukushima nuclear accident

Hugo Jaegler , Fabien Pointurier , Silvia Diez-Fernández , Alkiviadis Gourgiotis , Hélène Isnard et al.
Chemosphere, 2019, 225, pp.849-858. ⟨10.1016/j.chemosphere.2019.03.064⟩
Article dans une revue hal-02336278 v1
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Isotopic variations of copper at the protein level in neuronal human cells exposed in vitro to uranium

Eduardo Paredes , Veronique Malard , Claude Vidaud , Emilie Avazeri , Richard Ortega et al.
Analyst, 2019, 144 (20), pp.5928-5933. ⟨10.1039/C9AN01081E⟩
Article dans une revue hal-02447119 v1
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The half-life of 129I

Eduardo García-Toraño , T. Altzitzoglou , P. Auerbach , Marie-Martine Bé , Christophe Bobin et al.
Applied Radiation and Isotopes, 2018, 140, pp.157-162. ⟨10.1016/j.apradiso.2018.06.007⟩
Article dans une revue cea-02339672 v1
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Precise U and Pu isotope ratio measurements in nuclear samples by hyphenating capillary electrophoresis and MC-ICPMS

B. Martelat , H. Isnard , L. Vio , E. Dupuis , T. Cornet et al.
Analytical Chemistry, 2018, 90, pp.8622-8628
Article dans une revue cea-02339670 v1
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Impact of uranium uptake on isotopic fractionation and endogenous element homeostasis in human neuron-like cells

Eduardo Paredes , Emilie Avazeri , Veronique Malard , Claude Vidaud , Pascal E. Reiller et al.
Scientific Reports, 2018, 8 (1), pp.17163. ⟨10.1038/s41598-018-35413-4⟩
Article dans une revue hal-01952200 v1

A new procedure for high precision isotope ratio determinations of U, Cu and Zn at nanogram levels in cultured human cells: What are the limiting factors?

Eduardo Paredes , Emilie Avazeri , Veronique Malard , Claude Vidaud , Richard Ortega et al.
Talanta, 2018, 178, pp.894-904. ⟨10.1016/j.talanta.2017.10.046⟩
Article dans une revue hal-01704961 v1

Deconvolution of the isotopic drift in LC-MC-ICPMS coupling: a new tool for studding isotope fractionation induced by sample introduction techniques.

Alkiviadis Gourgiotis , Gérard Manhès , Banoit Martelat , Hélène Isnard
Journal of Analytical Atomic Spectrometry, 2017, 32, pp.1428-1434. ⟨10.1039/C6JA00418K⟩
Article dans une revue hal-02457227 v1

Comparison of a high temperature torch integrated sample introduction system with a desolvation system for the analysis of microsamples through inductively coupled plasma mass spectrometry

R. Sanchez , A. Canabate , C. Bresson , F. Chartier , H. Isnard et al.
Spectrochimica Acta Part B: Atomic Spectroscopy, 2017, 129, ⟨10.1016/j.sab.2017.01.004⟩
Article dans une revue cea-02421889 v1

Evidence of isotopic fractionation of natural uranium in cultured human cells

Eduardo Paredes , Emilie Avazeri , Veronique Malard , Claude Vidaud , Pascal E. Reiller et al.
Proc.Nat.Acad.Sci., 2016, 113 (49), pp.14007-14012. ⟨10.1073/pnas.1610885113⟩
Article dans une revue hal-01758782 v1

Results of the EURAMET.RI(II)- S7.Sm-151 supplementary comparison (EURAMET Project 1292)

Marie-Martine Bé , Philippe Cassette , Laurine Brondeau , Carole Fréchou , Valérie Lourenço et al.
Metrologia, 2015, 52 (1A), pp.06016 - 06016. ⟨10.1088/0026-1394/52/1A/06016⟩
Article dans une revue hal-01865003 v1

Neodymium isotope ratio measurements by LC-MC-ICPMS for nuclear applications: investigation of isotopic fractionation and mass bias correction

Florence Guéguen , Hélène Isnard , Anthony Nonell , Laurent Vio , Thomas Vercouter et al.
Journal of Analytical Atomic Spectrometry, 2015, 30 (2), pp.443-452. ⟨10.1039/c4ja00361f⟩
Article dans une revue cea-03189920 v1

Determination of the 151Sm half-life

Marie-Martine Bé , Hélène Isnard , Philippe Cassette , Xavier Mougeot , Valérie Lourenço et al.
Radiochimica Acta, 2015, 103 (9), pp.619-626. ⟨10.1515/ract-2015-2393⟩
Article dans une revue hal-01863604 v1
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Photon emission intensities in the decay of $^{108m}Ag and $^{110m}$Ag

Laurent Ferreux , Marie‐christine Lépy , Marie-Martine Bé , H. Isnard , V. Lourenco
Applied Radiation and Isotopes, 2014, 87, pp.101 - 106. ⟨10.1016/j.apradiso.2013.11.101⟩
Article dans une revue cea-01832043 v1

Method for isotope ratio drift correction by internal amplifier signal synchronization in MC-ICPMS transient signals

A. Gourgiotis , Sylvain Bérail , P. Louvat , H. Isnard , J. Moureau et al.
Journal of Analytical Atomic Spectrometry, 2014, 29 (9), pp.1607-1617. ⟨10.1039/c4ja00118d⟩
Article dans une revue hal-01590281 v1

Purification of a 166mHo solution by successive high-performance liquid chromatography and gravitational chromatography for half-life determination

Florence Guéguen , Hélène Isnard , Karsten Kossert , Carole Bresson , Céline Caussignac et al.
Journal of Radioanalytical and Nuclear Chemistry, 2014, 302 (1), pp.289-295. ⟨10.1007/s10967-014-3290-z⟩
Article dans une revue hal-04453518 v1
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Bk and Cf chromatographic separation and $^{249}$Bk/$^{248}$Cm and $^{249}$Cf/$^{248}$Cm elemental ratios determination by inductively coupled plasma quadrupole mass spectrometry

A. Gourgiotis , Hélène Isnard , Anthony Nonell , M. Aubert , G. Stadelmann et al.
Talanta, 2013, 106, pp.39 - 44. ⟨10.1016/j.talanta.2012.11.056⟩
Article dans une revue cea-01792079 v1

Stable (Cu, Mg) and radiogenic (Sr, Nd) isotope fractionation in colloids of boreal organic-rich waters

Svetlana Ilina , Jérôme Viers , Sergey Lapitsky , Sebastien Mialle , Vasileios Mavromatis et al.
Chemical Geology, 2013, 342, pp.63-75. ⟨10.1016/j.chemgeo.2013.01.019⟩
Article dans une revue istex hal-04453556 v1

Coupling between chip based isotachophoresis and multi-collector inductively coupled plasma mass spectrometry for separation and measurement of lanthanides

Laurent Vio , Gérard Crétier , Frédéric Chartier , Valérie Geertsen , Alkiviadis Gourgiotis et al.
Journal of Analytical Atomic Spectrometry, 2012, 27 (5), pp.850-856. ⟨10.1039/c2ja10283h⟩
Article dans une revue hal-00876095 v1
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The use of total evaporation method using Channeltron electron multipliers by thermal ionization mass spectrometry for europium isotope ratio measurements on picogram sample amounts

S. Mialle , Alexandre Quemet , A. Ponvienne , A. Gourgiotis , M. Aubert et al.
International Journal of Mass Spectrometry, 2012, 309, pp.141-147. ⟨10.1016/j.ijms.2011.09.014⟩
Article dans une revue cea-03470721 v1

Separation and analysis of lanthanides by isotachophoresis coupled with inductively coupled plasma mass spectrometry.

Laurent Vio , Gérard Crétier , Frédéric Chartier , Valérie Geertsen , Alkiviadis Gourgiotis et al.
Talanta, 2012, 99, pp.586-593. ⟨10.1016/j.talanta.2012.06.041⟩
Article dans une revue istex hal-00876090 v1

Sm isotope composition and Sm/Eu ratio determination in an irradiated 153Eu sample by ion exchange chromatography-quadrupole inductively coupled plasma mass spectrometry combined with double spike isotope dilution technique

M. Bourgeois , H. Isnard , A. Gourgiotis , G. Stadelmann , C. Gautier et al.
Journal of Analytical Atomic Spectrometry, 2011, 26 (8), pp.1660. ⟨10.1039/c1ja10070j⟩
Article dans une revue cea-04453405 v1

Simultaneous Uranium /Plutonium separation and direct isotope ratio measurements by using CO2 as gas in a collision/reaction cell based MC-ICPMS

A. Gourgiotis , M. Granet , H. Isnard , A. Nonell , Christian Gautier et al.
Journal of Analytical Atomic Spectrometry, 2010, 25, pp.1939-1945. ⟨10.1039/c0ja00092b⟩
Article dans une revue istex insu-00578756 v1

Accurate determination of Curium and Californium isotopic ratios by inductively coupled plasma quadrupole mass spectrometry (ICP-QMS) in 248Cm samples for transmutation studies

A. Gourgiotis , H. Isnard , M. Aubert , E. Dupont , I. Almahamid et al.
International Journal of Mass Spectrometry, 2010, 291 (3), pp.101-107. ⟨10.1016/j.ijms.2010.02.002⟩
Article dans une revue istex hal-05217385 v1

One step U-Pu-Cs-Ln-steel separation using TRU preconditioned extraction resins from Eichrom for application on transmutation targets

S. Quidelleur , M. Granet , I. Laszak , H. Isnard , E. Pons-Branchu et al.
Journal of Radioanalytical and Nuclear Chemistry, 2009, 280 (3), pp.507-517. ⟨10.1007/s10967-009-7449-y⟩
Article dans une revue istex hal-03199073 v1

Cs–Ba separation using N2O as a reactant gas in a Multiple Collector-Inductively Coupled Plasma Mass Spectrometer collision-reaction cell: Application to the measurements of Cs isotopes in spent nuclear fuel samples

Mathieu Granet , Anthony Nonell , Georges Favre , Frédéric Chartier , Hélène Isnard et al.
Spectrochimica Acta Part B: Atomic Spectroscopy, 2008, 63, pp.1309-1314. ⟨10.1016/j.sab.2008.09.011⟩
Article dans une revue istex hal-00348457 v1

High accuracy measurements of Mo isotopes by MC-ICPMS with in situ Mo/Zr separation using N2O in a collision reaction cell

Julien Moureau , Mathieu Granet , Frédéric Chartier , Georges Favre , Hélène Isnard et al.
Journal of Analytical Atomic Spectrometry, 2008, 23, pp.1538-1544. ⟨10.1039/b803826k⟩
Article dans une revue istex hal-00348456 v1

Analyses isotopiques de radionucleides et les enjeux de la miniaturisation

Hélène Isnard
GDR Traces et Ultratraces, Feb 2024, ORSAY, France
Communication dans un congrès cea-04465734 v1

A New Plutonium Metal Certified Reference Material at CETAMA: the MP4 Standard

Sébastien Picart , Marielle Crozet , Davrain Ygor , Caroline Bertorello , Giacomo Canciani et al.
ATALANTE2024, CEA, Sep 2024, Avignon (FR), France
Communication dans un congrès cea-04724391 v1

Développement analytique pour des mesures isotopiques par spectrométrie de masse en tandem dans le domaine du nucléaire

Majd Homaidan Shmeit , Hélène Isnard
Atelier ISOTRACE 2023, Oct 2023, MONTPELLIER, France
Communication dans un congrès cea-04288528 v1
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Radionuclide measurements by mass spectrometry and radiometric techniques: differences and complementarities

Hélène Isnard , Valérie Lourenco
Workshop on the Use of Mass Spectrometry in Radionuclide Metrology, Feb 2023, WEBINAR, France
Communication dans un congrès cea-04037053 v1

Determination of the 144Ce/238U ratio in spent nuclear fuel samples by double spike isotope dilution mass spectrometry

Anthony Nonell , Aurélien Beaumais , Céline Caussignac , Sébastien Mialle , Guillaume Stadelmann et al.
AnalytiX-2023, May 2023, OSAKA, Japan
Communication dans un congrès cea-04328749 v1

Performances of isotopic ratio measurements of Sr and U by MC-ICPMS using oxygen in collision/reaction cell

Hélène Isnard , Yvan Gerard , Perters Daniel
Goldschmidt 2023, Jul 2023, Lyon, France
Communication dans un congrès cea-04288523 v1
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Développement et validation d'une méthode de mesure directe du rapport $^{237}$Np/$^{238}$U dans des combustibles irradiés en MC-ICPMS.

Sébastien Mialle , Anthony Nonell , Hélène Isnard , Céline Cruchet , Céline Caussignac et al.
SPECTRATOM 2022, May 2022, Pau, France
Communication dans un congrès cea-03887161 v1

Application of coupling between capillary electrophoresis and mass spectrometry for precise isotope ratio measurements

Julie Stevenin , Erwan Dupuis , Hélène Isnard , Frédéric Chartier
Analytics, Sep 2022, Nantes, France
Communication dans un congrès cea-04327890 v1

Analyse isotopique du plutonium et de l’uranium présents à l’état d’ultra-traces dans des sédiments de rivières de la région de Fukushima

Fabien Pointurier , Hugo Jaegler , Alkiviadis Gourgiotis , Hélène Isnard , Silvia Diez-Fernández et al.
SPECTR’ATOM, SPECTR’ATOM 2020, 2022, PAU, France
Communication dans un congrès hal-03602218 v1
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Séparation et spéciation des éléments dans des échantillons nucléaires par couplage entre l'électrophorèse capillaire et la spectrométrie de masse à source plasma et à multicollection

E. Dupuis , L. Vio , H. Isnard , F. Chartier
Journees du DIM Analytics, May 2018, Paris, France
Communication dans un congrès cea-02338966 v1
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Séparation et spéciation des éléments dans des échantillons nucléaires par couplage entre l'électrophorèse capillaire et la spectrométrie de masse à source plasma et à multicollection

E. Dupuis , L. Vio , H. Isnard , F. Chartier
Journée de l’école doctorale 388 - 2018, Jun 2018, Paris, France
Communication dans un congrès cea-02338564 v1

Determination of 236U/238U ratios in environmental samples using ICP-MS/MS.

S. Diez, Fernandez , H. Isnard , F. Pointurier , H. Jaegler , C. Bresson et al.
Nordic Plasma conference, Jun 2018, Loen, Norway
Communication dans un congrès hal-02338990 v1

High precision isotopic analysis of U, Cu and Zn in a human neuronal cell model

E. Paredes , E. Avazeri , Veronique Malard , C. Vidaud , R. Ortega et al.
14th International Symposium on Applied Bioinorganic Chemistry ISABC, Jun 2017, Toulouse, France
Communication dans un congrès cea-02434541 v1

Développement d’une méthode électrophorétique de séparation de l’uranium, du thorium et des lanthanides avec détection par ICP-MS (Q)

B. Martelat , H. Isnard , L. Vio , F. Chartier
Spectr'Atom - 2016, May 2016, Pau, France
Communication dans un congrès cea-02442316 v1
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Use of 10$^{12}$ and 10$^{13}$ ohm resistor amplifiers for uranium isotopic measurements by TIMS and MC-ICPMS

H. Isnard , M. Aubert , A. Nonell , F. Chartier
Goldschmidt 2016 - International conference on geochemistry and related subjects, Jun 2016, Yokohama, Japan
Communication dans un congrès cea-02439460 v1

Analytical development for high precision isotopic measurements by mass spectrometry in the nuclear domain

H. Isnard
Visite a l'ITU de Karlsruhe, Nov 2015, Karlsruhe, Germany
Communication dans un congrès hal-02445738 v1
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Analytical developments for high precision isotope measurements on transmutation target in the phenix fast neutron reactor

H. Isnard , G. Ferlay , S. Eymard , O. Vigneau , J-F. Lebrat et al.
GLOBAL 2015, Sep 2015, Paris, France
Communication dans un congrès cea-02509737 v1

Improvement in Thermal-Ionization Mass Spectrometry (TIMS) using Total Flash Evaporation (TFE) method for lanthanides isotope ratio measurements in transmutation targets

Sébastien Mialle , A. Gourgiotis , M. Aubert , G. Stadelmann , C. Gautier et al.
2011 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA), Jun 2011, Gand, Belgium. pp.1-5, ⟨10.1109/ANIMMA.2011.6172916⟩
Communication dans un congrès hal-05116339 v1

Application of collision reaction-cell based MC-ICPMS to in-situ interferences resolution for elemental and isotopic ratios measurements of nuclear fuel samples

A. Nonell , Hélène Isnard , M. Granet , J. Moureau , G. Favre et al.
2009 1st International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA), Jun 2009, Marseille, France. pp.1-5, ⟨10.1109/ANIMMA.2009.5503712⟩
Communication dans un congrès cea-05384986 v1

Étude par modélisation DFT des réactions avec O2 utilisées dans la cellule de collisions / réactions d'un ICP-MS pour supprimer l'interférence isobarique 90Zr/90Sr. Application à la mesure directe du 90Sr dans des solutions de combustibles nucléaires

G. Favre , R. Brennetot , F. Chartier , H. Isnard
6èmes Journées Scientifiques de Marcoule, May 2006, La Grande Motte, France
Communication dans un congrès hal-00159516 v1