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Free Eu3+ determination in natural waters

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierLaboratoire Interdisciplinaire des Environnements Continentaux [LIEC]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
dc.contributor.authorJANOT, Noemie
hal.structure.identifierDepartment of Soil Quality
hal.structure.identifierLaboratoire Interdisciplinaire des Environnements Continentaux [LIEC]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
dc.contributor.authorGROENENBERG, Jan E.
hal.structure.identifierLaboratoire Interdisciplinaire des Environnements Continentaux [LIEC]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
dc.contributor.authorOTERO-FARIÑA, Alba
hal.structure.identifierLaboratoire Interdisciplinaire des Environnements Continentaux [LIEC]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
dc.contributor.authorPINHEIRO, Jose Paulo
dc.date.accessioned2024-04-08T12:07:42Z
dc.date.available2024-04-08T12:07:42Z
dc.date.issued2019
dc.date.conference2019-10-08
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196477
dc.description.abstractEnThe aim of this study was to develop an analytical method to determine free concentration of the rare earth element Europium in natural waters. Detection of Eu in solution using electroanalytical methods was performed by adsorptive cation stripping voltammetry after complexation with N-nitroso-N-phenylhydroxylamine (cupferron). Optimization of analytical parameters allowed us to detect nanomolar level of Eu(III) in solution.To detect the amount of free Eu3+ in solution, we use the Donnan Membrane Technique (DMT) in which a natural solution (the “donor” side) is separated from a ligand-free (“acceptor”) solution by a cation-exchange membrane. This membrane allows only non-complexed cations to pass through it, and after a given equilibration time free metal concentration are equal in both sides. However, due to its high charge Eu3+ tends to get adsorbed onto the cation-exchange membrane. We analyzed solutions from different Eu3+ and Ca2+ (as background-ion) concentrations to determine physico-chemical conditions for which the method can be used. Results showed that 100 mM of Ca2+ prevented any adsorption of Eu from the solution. The optimized set-up was then used to determine Eu complexation in a Eu-fulvic acid solution.
dc.language.isoen
dc.title.enFree Eu3+ determination in natural waters
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halChimie/Chimie analytique
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géochimie
bordeaux.pagenp
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.titleRare earth elements supply: challenges and perspectives
bordeaux.countryFR
bordeaux.conference.cityNancy
bordeaux.peerReviewedoui
hal.identifierhal-02401248
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.organizerLabEx RESSOURCES21
hal.conference.end2019-10-10
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02401248v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2019&rft.spage=np&rft.epage=np&rft.au=JANOT,%20Noemie&GROENENBERG,%20Jan%20E.&OTERO-FARI%C3%91A,%20Alba&PINHEIRO,%20Jose%20Paulo&rft.genre=conference


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