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Quantification of water in ethanol using a photothermal transparent transducer

dc.contributor.authorOmido, C. R. [UNESP]
dc.contributor.authorOliveira, S. L.
dc.contributor.authorShiraishi, R. S.
dc.contributor.authorMagalhães, K. F.
dc.contributor.authorFerreira, V. S.
dc.contributor.authorDe Carvalho, A. A. [UNESP]
dc.contributor.authorKitano, C. [UNESP]
dc.contributor.authorDe Paula, M. H.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Mato Grosso do Sul (UFMS)
dc.contributor.institutionColégio Militar de Campo Grande
dc.date.accessioned2014-05-27T11:28:22Z
dc.date.available2014-05-27T11:28:22Z
dc.date.issued2013-02-08
dc.description.abstractEthanol with added water may be found during the process of assessing its physical and chemical properties. This addition can damage automotive vehicle engines and also may contribute to tax evasion. The present contribution describes a method based on a photothermal transparent transducer to determine the water content in ethanol. A chamber with a window of lithium tantalate coated with a thin layer of indium tin oxide was used, and a 1450-nm laser diode was employed as the excitation source. The results indicated a nearly linear response of the apparatus, as a function of the water content in water/ethanol solutions ranging from 0 to 100 (vol.%). The results for the dependency of the photothermal signal on the laser power and chopping frequency suggested that reliable results can be obtained using laser power and chopping rates above 100 mW and 10 Hz, respectively. The results reported here may be useful in the development of an alternative method that can provide real-time data on the water concentration in ethanol in a rapid, portable and unambiguous way, and that can be easily used in laboratory analyses or in gas stations. © 2013 Elsevier B.V.en
dc.description.affiliationDepartamento de Engenharia Elétrica Universidade Estadual Paulista, Ilha Solteira, SP CEP 15385-000
dc.description.affiliationCentro de Ciências Exatas e Tecnologia Universidade Federal de Mato Grosso Do sul, CEP 79070-900 Campo Grande, MS
dc.description.affiliationColégio Militar de Campo Grande, CEP 79115-810 Campo Grande, MS
dc.description.affiliationUnespDepartamento de Engenharia Elétrica Universidade Estadual Paulista, Ilha Solteira, SP CEP 15385-000
dc.format.extent581-585
dc.identifierhttp://dx.doi.org/10.1016/j.snb.2012.12.121
dc.identifier.citationSensors and Actuators, B: Chemical, v. 178, p. 581-585.
dc.identifier.doi10.1016/j.snb.2012.12.121
dc.identifier.issn0925-4005
dc.identifier.lattes0250066159980825
dc.identifier.lattes2883440351895167
dc.identifier.lattes0000-0001-6320-755X
dc.identifier.scopus2-s2.0-84873312920
dc.identifier.urihttp://hdl.handle.net/11449/74571
dc.identifier.wosWOS:000315751100076
dc.language.isoeng
dc.relation.ispartofSensors and Actuators B: Chemical
dc.relation.ispartofjcr5.667
dc.relation.ispartofsjr1,406
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectEthanol
dc.subjectFuel
dc.subjectPhotothermal spectrometry
dc.subjectWater
dc.subjectAdded water
dc.subjectAlternative methods
dc.subjectAutomotive vehicle
dc.subjectChopping frequency
dc.subjectExcitation sources
dc.subjectGas stations
dc.subjectIndium tin oxide
dc.subjectLaboratory analysis
dc.subjectLaser power
dc.subjectLinear response
dc.subjectLithium tantalate
dc.subjectPhoto-thermal
dc.subjectPhotothermal signals
dc.subjectPhysical and chemical properties
dc.subjectReal-time data
dc.subjectThin layers
dc.subjectWater concentrations
dc.subjectChemical properties
dc.subjectFuels
dc.subjectLithium
dc.subjectTin
dc.subjectTin oxides
dc.subjectTransducers
dc.titleQuantification of water in ethanol using a photothermal transparent transduceren
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dspace.entity.typePublication
unesp.author.lattes0250066159980825[6]
unesp.author.lattes2883440351895167[7]
unesp.author.orcid0000-0001-6320-755X[7]
unesp.author.orcid0000-0001-8204-3482[6]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentEngenharia Elétrica - FEISpt

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