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dc.contributor.authorHuidobro Redondo, César
dc.contributor.authorCompanys Ferran, Encarnació
dc.contributor.authorPuy Llorens, Jaume
dc.contributor.authorGalceran i Nogués, Josep
dc.contributor.authorPinheiro, Jose Paulo
dc.date.accessioned2015-11-04T08:51:24Z
dc.date.available2015-11-04T08:51:24Z
dc.date.issued2007
dc.identifier.issn1572-6657
dc.identifier.urihttp://hdl.handle.net/10459.1/48906
dc.description.abstractAbsence of gradients and nernstian equilibrium stripping (AGNES) is a new electroanalytical technique designed to determine free heavy metal ion concentrations in solutions. AGNES had been applied, up to date, with conventional equipment such as the hanging mercury drop electrode (HMDE). Due to their much smaller volume, microelectrodes can reach a given preconcentration factor within a much shorter deposition time, so their use for AGNES has been evaluated in this work. For the particular case of the mercury microelectrode deposited onto an Ir disk (radius around 5 μm), AGNES has been successfully used for speciation purposes in the system Pb + PDCA (pyridinedicarboxylic acid). However, due to a relatively large capacitive current, which decays slowly, the limit of quantification for such microelectrodes has only been reduced by one half with respect to that of the HMDE.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.jelechem.2007.06.001
dc.relation.ispartofJournal of Electroanalytical Chemistry, 2007, vol. 606, num. 2, p. 134-140
dc.rights(c) Elsevier, 2007
dc.subject.classificationElectroquímica
dc.subject.otherElectrochemistry
dc.titleThe use of microelectrodes with AGNES
dc.typeinfo:eu-repo/semantics/article
dc.date.updated2015-11-04T08:51:24Z
dc.identifier.idgrec011421
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doihttps://doi.org/10.1016/j.jelechem.2007.06.001


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