dc.creatorFemandes, HL
dc.creatorRaimundo, IM
dc.creatorPasquini, C
dc.creatorRohwedder, JJR
dc.date2008
dc.dateMAY 15
dc.date2014-11-18T14:41:55Z
dc.date2015-11-26T16:55:58Z
dc.date2014-11-18T14:41:55Z
dc.date2015-11-26T16:55:58Z
dc.date.accessioned2018-03-28T23:43:26Z
dc.date.available2018-03-28T23:43:26Z
dc.identifierTalanta. Elsevier Science Bv, v. 75, n. 3, n. 804, n. 810, 2008.
dc.identifier0039-9140
dc.identifier1873-3573
dc.identifierWOS:000255828800031
dc.identifier10.1016/j.talanta.2007.12.025
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74209
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74209
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74209
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277266
dc.descriptionNear infrared (NIR) spectroscopy was employed for simultaneous determination of methanol and ethanol contents in gasoline. Spectra were collected in the range from 714 to 2500 nm and were used to construct quantitative models based on partial least squares (PLS) regression. Samples were prepared in the laboratory and the PLS regression models were developed using the spectral range from 1105 to 1682 nm, showing a root mean square error of prediction (RMSEP) of 0.28% (v/v) for ethanol for both PLS-1 and PLS-2 models and of 0.31 and 0.32% (v/v) for methanol for the PLS-1 and PLS-2 models. respectively. A RMSEP of 0.83% (v/v) was obtained for commercial samples. The effect of the gasoline composition was investigated, it being verified that some solvents, such as toluene and o-xylene, interfere in ethanol content prediction, while isooctane, o-xylene, in-xylene and p-xylene interfere in the methanol content prediction. Other spectral ranges were investigated and the range 1449-1611 nm showed the best results. (C) 2007 Elsevier B.V. All rights reserved.
dc.description75
dc.description3
dc.description804
dc.description810
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationTalanta
dc.relationTalanta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectalcohol
dc.subjectmethanol
dc.subjectethanol
dc.subjectgasoline
dc.subjectnear infrared spectroscopy
dc.subjectmultivariate calibration
dc.subjectPLS
dc.subjectNear-infrared Spectroscopy
dc.subjectMultivariate Calibration
dc.subjectSamples
dc.titleSimultaneous determination of methanol and ethanol in gasoline using NIR spectroscopy: Effect of gasoline composition
dc.typeArtículos de revistas


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