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dc.contributor.authorGaroz Ruiz, Jesús 
dc.contributor.authorHeras Vidaurre, Aránzazu 
dc.contributor.authorColina Santamaría, Álvaro 
dc.date.accessioned2018-09-12T11:41:29Z
dc.date.available2018-09-12T11:41:29Z
dc.date.issued2017-02
dc.identifier.issn0003-2700
dc.identifier.urihttp://hdl.handle.net/10259/4947
dc.description.abstractThe study of real samples is more complicated than the study of other systems. However, the inherent advantages of UV–vis absorption spectroelectrochemistry should overcome some difficulties related to direct measurements in complex matrices. For this reason, a singular spectroelectrochemistry device has been fabricated and validated. The novel cell is based on single-walled carbon nanotubes, which are filtered and subsequently press-transferred on a polyethylene terephthalate support using a stencil with a custom design. With this new methodology, working, counter, and reference electrodes are completely flat on the surface, where two optical fibers are fixed in a long optical path length configuration. To demonstrate the usefulness of this device and the power of spectroelectrochemistry techniques to solve problems of the current world, this device is used to quantitatively detect the concentration of ascorbic acid in a complex matrix such as a fruit, directly, without any previous sample pretreatment. The ease to fabricate the device, the advantages related to its use, and the excellent results obtained not only with univariate but also with multivariate analysis, shed more light on the analysis of samples as they occur in nature. According to the particular features of this cell, to the best of our knowledge this is the first spectroelectrochemical sensor that can be inserted directly in a biological matrix, laying the groundwork to perform in vivo measurements in a near future.en
dc.description.sponsorshipMinisterio de Economıá y Competitividad (CTQ2014-55583-R, CTQ2014-61914-EXP, CTQ2015- 71955-REDT) and Junta de Castilla y León (BU033-U16)en
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherAmerican Chemical Societyen
dc.relation.ispartofAnalytical Chemistry. 2017, V. 89, n. 3, p. 1815-1822
dc.subject.otherQuímica analíticaes
dc.subject.otherChemistry, Analyticen
dc.titleDirect determination of ascorbic acid in a grapefruit: paving the way for in vivo spectroelectrochemistryen
dc.typeinfo:eu-repo/semantics/article
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.publisherversionhttps://doi.org/10.1021/acs.analchem.6b04155
dc.identifier.doi10.1021/acs.analchem.6b04155
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2014-61914-EXP
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2015-71955-REDT
dc.relation.projectIDinfo:eu-repo/grantAgreement/JCyL/BU033-U16
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersionen


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