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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorZougagh, M.
dc.creatorRedigolo, H.
dc.creatorRios, A.
dc.creatorValcarcel, M.
dc.date2014-05-20T15:21:33Z
dc.date2016-10-25T17:55:00Z
dc.date2014-05-20T15:21:33Z
dc.date2016-10-25T17:55:00Z
dc.date2004-11-08
dc.date.accessioned2017-04-05T23:31:59Z
dc.date.available2017-04-05T23:31:59Z
dc.identifierAnalytica Chimica Acta. Amsterdam: Elsevier B.V., v. 525, n. 2, p. 265-271, 2004.
dc.identifier0003-2670
dc.identifierhttp://hdl.handle.net/11449/32676
dc.identifierhttp://acervodigital.unesp.br/handle/11449/32676
dc.identifier10.1016/j.aca.2004.07.072
dc.identifierWOS:000224709900013
dc.identifierhttp://dx.doi.org/10.1016/j.aca.2004.07.072
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/876964
dc.descriptionA 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.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationAnalytica Chimica Acta
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectscreening method
dc.subjectsupercritical fluid extraction
dc.subjectfluorescence detection
dc.subjectPAHs
dc.subjectvegetable oils
dc.subjectliquid chromatography
dc.titleScreening and confirmation of PAHs in vegetable oil samples by use of supercritical fluid extraction in conjunction with liquid chromatography and fluorimetric detection
dc.typeOtro


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