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Screening and confirmation of PAHs in vegetable oil samples by use of supercritical fluid extraction in conjunction with liquid chromatography and fluorimetric detection

dc.contributor.authorZougagh, M.
dc.contributor.authorRedigolo, H.
dc.contributor.authorRios, A.
dc.contributor.authorValcarcel, M.
dc.contributor.institutionUniv Cordoba
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Castilla La Mancha
dc.date.accessioned2014-05-20T15:21:33Z
dc.date.available2014-05-20T15:21:33Z
dc.date.issued2004-11-08
dc.description.abstractA fast, simple, non-destructive method for the direct screening of polycyclic aromatic hydrocarbons (PAHs) in vegetable oil samples is proposed. The method uses a supercritical fluid extraction (SFE) system coupled on-line with a fluorimetric detector to determine PAHs. This special assembly avoids the main problems encountered in the determination of PAHs in complex matrices such as vegetable oils. PAHs are selectively extracted by using silica gel in the thimble and cleaned up by passage through a C18 column. Interferences are preferentially retained by the silica gel during the SFE process while PAHs are adsorbed in the C18 column and the remainder of the matrix is sent to waste. Finally, the C18 column is purged to remove residual CO2 gas and adsorbed PAHs are recovered by desorption with a solvent. The extracts from positive samples are subsequently analyzed by liquid chromatography (LC) with fluorescence detection. The proposed method allows the confirmation of vegetable oil safety and hence provides a new tool for consumer protection. (C) 2004 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Cordoba, Div Analyt Chem, E-14071 Cordoba, Spain
dc.description.affiliationUniv Estadual Paulista, Dept Analyt Chem, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Castilla La Mancha, Dept Analyt Chem & Food Technol, E-13004 Ciudad Real, Spain
dc.description.affiliationUnespUniv Estadual Paulista, Dept Analyt Chem, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent265-271
dc.identifierhttp://dx.doi.org/10.1016/j.aca.2004.07.072
dc.identifier.citationAnalytica Chimica Acta. Amsterdam: Elsevier B.V., v. 525, n. 2, p. 265-271, 2004.
dc.identifier.doi10.1016/j.aca.2004.07.072
dc.identifier.issn0003-2670
dc.identifier.urihttp://hdl.handle.net/11449/32676
dc.identifier.wosWOS:000224709900013
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofAnalytica Chimica Acta
dc.relation.ispartofjcr5.123
dc.relation.ispartofsjr1,512
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectscreening methodpt
dc.subjectsupercritical fluid extractionpt
dc.subjectfluorescence detectionpt
dc.subjectPAHspt
dc.subjectvegetable oilspt
dc.subjectliquid chromatographypt
dc.titleScreening and confirmation of PAHs in vegetable oil samples by use of supercritical fluid extraction in conjunction with liquid chromatography and fluorimetric detectionen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Analítica - IQARpt

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