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dc.contributor.authorHernández Muñoz, Sheila 
dc.contributor.authorPerales Rondon, Juan Víctor 
dc.contributor.authorHeras Vidaurre, Aránzazu 
dc.contributor.authorColina Santamaría, Álvaro 
dc.date.accessioned2020-06-10T10:27:06Z
dc.date.available2020-06-10T10:27:06Z
dc.date.issued2020-02
dc.identifier.issn0013-4686
dc.identifier.urihttp://hdl.handle.net/10259/5337
dc.description.abstractIn the present work, a new methodology which combines two different phenomena to enhance the Raman signal is used to resolve a mixture of two compounds with similar molecular structures. The use of Raman spectroelectrochemistry (Raman-SEC) allows us to collect simultaneously, with high time-resolution, the enhancement of the Raman signal of the compounds present in a sample during the electrochemical oxidation-reduction cycle (ORC) of a silver screen-printed electrode. During such ORC two different phenomena appears depending on the stage of the electrochemical modification of the silver substrate, which are known as electrochemical surface enhanced Raman scattering (EC-SERS) and electrochemical surface oxidation enhanced Raman scattering (EC-SOERS). This work is a proof of concept that demonstrates the advantage of using EC-SOERS and EC-SERS in a single experiment to resolve mixtures of similar molecules such as vitamin B3, which components are nicotinic acid and nicotinamide. Although the interaction between analytes and substrates influence a univariate calibration, the trilinear character of Raman-SEC makes possible to deconvolve such interactions and provide a good calibration curve for both, nicotinic acid and nicotinamide.en
dc.description.sponsorshipMinisterio de Economía y Competitividad (Grants CTQ2017-83935-R-AEI/FEDERUE), Junta de Castilla y León (Grant BU033-U16 and BU297P18) and Ministerio de Ciencia, Innovación y Universidades (RED2018-102412-T). J.V.P-R. thanks JCyL for his postdoctoral fellowship (Grant BU033-U16)es
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofElectrochimica Acta. 2020, V. 334, 135561es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectEC-SERSen
dc.subjectEC-SOERSen
dc.subjectRaman spectroelectrochemistryen
dc.subjectNicotinic aciden
dc.subjectNicotinamideen
dc.subject.otherQuímica analíticaes
dc.subject.otherChemistry, Analyticen
dc.titleElectrochemical SERS and SOERS in a single experiment: A new methodology for quantitative analysisen
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.relation.publisherversionhttps://doi.org/10.1016/j.electacta.2019.135561es
dc.identifier.doi10.1016/j.electacta.2019.135561
dc.relation.projectIDinfo:eu-repo/grantAgreement/JCyL/BU297P18
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2017-83935-R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MICINN/RED2018-102412-T
dc.journal.titleElectrochimica Actaes
dc.volume.number334es
dc.page.initial135561es
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersiones


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