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Polyelectrolyte based sensors as key to achieve quantitative electronic tongues: Detection of triclosan on aqueous environmental matrices

2020-03-29Artigo científico Acesso aberto
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dc.contributor.authorMagro, Cátia
dc.contributor.authorZagalo, Paulo
dc.contributor.authorPereira-Da-silva, João
dc.contributor.authorMateus, Eduardo Pires
dc.contributor.authorRibeiro, Alexandra Branco
dc.contributor.authorRibeiro, Paulo
dc.contributor.authorRaposo, Maria
dc.contributor.institutionCENSE - Centro de Investigação em Ambiente e Sustentabilidade
dc.contributor.institutionDCEA - Departamento de Ciências e Engenharia do Ambiente
dc.contributor.institutionCeFITec – Centro de Física e Investigação Tecnológica
dc.contributor.institutionDF – Departamento de Física
dc.contributor.pblMDPI AG
dc.date.accessioned2020-05-11T22:51:01Z
dc.date.available2020-05-11T22:51:01Z
dc.date.issued2020-03-29
dc.descriptionThis work was supported by the Project “Development of Nanostructures for Detection of Triclosan Traces on Aquatic Environments” (PTDC/FIS-NAN/0909/2014). The Center for Environmental and Sustainability Research CENSE and Centre of Physics and Technological Research CEFITEC,which is financed bynational funds from FCT/MEC (UID/AMB/04085/2019 and UID/FIS/00068/2019). This research was anchored by the RESOLUTION LAB, an infrastructure at NOVA School of Science and Technology. J. Pereira-da-Silva and P. Zagalo acknowledge their fellowships PD/BD/142768/2018, PD/BD/142767/2018 from RABBIT Doctoral Program, respectively. C. Magro acknowledges to Fundação para a Ciência e a Tecnologia for her PhD fellowship (SFRH/BD/114674/2016).
dc.description.abstractTriclosan (TCS) is a bacteriostatic used in household items that promotes antimicrobial resistance and endocrine disruption effects both to humans and biota, raising health concerns. In this sense, new devices for its continuous monitoring in complex matrices are needed. In this work, sensors, based on polyelectrolyte layer-by-layer (LbL) films prepared onto gold interdigitated electrodes (IDE), were studied. An electronic tongue array, composed of (polyethyleneimine (PEI)/polysodium 4-styrenesulfonate (PSS))5 and (poly(allylamine hydrochloride/graphene oxide)5 LbL films together with gold IDE without coating were used to detect TCS concentrations (10−15–10−5 M). Electrical impedance spectroscopy was used as means of transduction and the obtained data was analyzed by principal component analysis (PCA). The electronic tongue was tested in deionized water, mineral water and wastewater matrices showing its ability to (1) distinguish between TCS doped and non-doped solutions and (2) sort out the TCS range of concentrations. Regarding film stability, strong polyelectrolytes, as (PEI/PSS)n, presented more firmness and no significant desorption when immersed in wastewater. Finally, the PCA data of gold IDE and (PEI/PSS)5 sensors, for the mineral water and wastewater matrices, respectively, showed the ability to distinguish both matrices. A sensitivity value of 0.19 ± 0.02 per decade to TCS concentration and a resolution of 0.13 pM were found through the PCA second principal component.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent7516993
dc.identifier.doi10.3390/nano10040640
dc.identifier.issn2079-4991
dc.identifier.otherPURE: 18105933
dc.identifier.otherPURE UUID: 83f2a1cb-e2a7-453b-91d3-97bae0fc9823
dc.identifier.otherScopus: 85083059094
dc.identifier.otherPubMed: 32235407
dc.identifier.otherORCID: /0000-0002-5606-3591/work/73772512
dc.identifier.otherPubMedCentral: PMC7221897
dc.identifier.otherWOS: 000539577200043
dc.identifier.urihttp://hdl.handle.net/10362/97532
dc.identifier.urlhttps://www.scopus.com/pages/publications/85083059094
dc.language.isoeng
dc.peerreviewedyes
dc.subjectElectronic tongue
dc.subjectEnvironmental monitoring
dc.subjectImpedance spectroscopy
dc.subjectInterdigitated sensors
dc.subjectLayer-by-layer technique
dc.subjectTriclosan
dc.subjectGeneral Chemical Engineering
dc.subjectGeneral Materials Science
dc.subjectSDG 3 - Good Health and Well-being
dc.subjectSDG 6 - Clean Water and Sanitation
dc.titlePolyelectrolyte based sensors as key to achieve quantitative electronic tongues: Detection of triclosan on aqueous environmental matricesen
dc.typejournal article
degois.publication.issue4
degois.publication.titleNanomaterials
degois.publication.volume10
dspace.entity.typePublication
rcaap.rightsopenAccess

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