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dc.contributor.authorZavarise, Francesca
dc.contributor.authorCompanys Ferran, Encarnació
dc.contributor.authorGalceran i Nogués, Josep
dc.contributor.authorAlberti, Giancarla
dc.contributor.authorProfumo, Antonella
dc.date.accessioned2015-11-06T08:52:31Z
dc.date.available2015-11-06T08:52:31Z
dc.date.issued2010
dc.identifier.issn1618-2642
dc.identifier.urihttp://hdl.handle.net/10459.1/48920
dc.description.abstractAbsence of gradients and Nernstian equilibrium stripping (AGNES) is a recently developed electroanalytical technique specifically designed for the direct determination of free concentrations of metal ions. AGNES is applied here to the determination of free Zn concentration in a river water sample. The method has been validated with synthetic solutions of low ionic strengths containing Zn and 2,6-pyridinedicarboxylic acid and then applied to synthetic river waters and to a natural sample collected from Besòs River in Montcada i Reixac (Catalonia, North-Eastern Spain). In the river sample, an average free Zn concentration of 12.8(4) nM was obtained, while the total dissolved Zn concentration was 0.51(8) μM. To control and maintain pH and pCO2 constant during AGNES measurements, a novel device for N2/CO2 mixed purging has been developed.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer Verlag
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1007/s00216-009-3439-8
dc.relation.ispartofAnalytical and Bioanalytical Chemistry, 2010, vol. 397, num. 1, p. 389-394
dc.rights(c) Springer Verlag, 2010
dc.subject.classificationZinc
dc.subject.classificationAigua dolça
dc.subject.classificationAnàlisi electroquímica
dc.subject.otherZinc
dc.subject.otherFresh water
dc.subject.otherElectrochemical analysis
dc.titleApplication of the new electroanalytical technique AGNES for the determination of free Zn concentration in river water
dc.typeinfo:eu-repo/semantics/article
dc.date.updated2015-11-06T08:52:31Z
dc.identifier.idgrec015464
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doihttps://doi.org/10.1007/s00216-009-3439-8


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