Determination of fluquinconazole, pyrimethanil, and clofentezine residues in fruits by liquid chromatography with ultraviolet detection

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dc.contributor.authorNavickiene, S.
dc.contributor.authorRibeiro, M. L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:27:37Z
dc.date.available2014-05-20T15:27:37Z
dc.date.issued2004-03-01
dc.description.abstractA simple method was developed for the determination of fluquinconazole, pyrimethanil, and clofentezine in whole fruit; peel; and pulp of mango, apple, and papaya. These compounds were extracted from fruit samples with a mixture of ethyl acetate-n-hexane (1 + 1, v/v). An aliquot (2 mL) of the extract was evaporated to near dryness under a stream of nitrogen, and the residue was dissolved with 2 mL methanol. The analysis was performed by means of liquid chromatography with ultraviolet detection at 254 nm using a gradient solvent system. The method was validated with fortified fruit samples at concentration levels of 0.05, 0.10, 0.20, and 0.50 mg/kg. Average recoveries (4-8 replicates) ranged from 80 to 95% with relative standard deviations between 3.5 and 12.7%. Detection limits ranged from 0.03 to 0.05 mg/kg for fruit pulp and 0.03 mg/kg for whole fruit. The quantitation limits ranged from 0.05 to 0.10 mg/kg for fruit pulp and 0.05 mg/kg for whole fruit. The analytical method was applied to fruit samples obtained from local markets.en
dc.description.affiliationUniv Estadual Paulista, Dept Quim Organ, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim Organ, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.format.extent435-438
dc.identifierhttp://www.ingentaconnect.com/content/aoac/jaoac/2004/00000087/00000002/art00017
dc.identifier.citationJournal of Aoac International. Gaithersburg: Aoac International, v. 87, n. 2, p. 435-438, 2004.
dc.identifier.issn1060-3271
dc.identifier.urihttp://hdl.handle.net/11449/37570
dc.identifier.wosWOS:000221225600018
dc.language.isoeng
dc.publisherAoac International
dc.relation.ispartofJournal of AOAC International
dc.relation.ispartofjcr1.087
dc.relation.ispartofsjr0,324
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleDetermination of fluquinconazole, pyrimethanil, and clofentezine residues in fruits by liquid chromatography with ultraviolet detectionen
dc.typeArtigo
dcterms.licensehttp://mc.manuscriptcentral.com/societyimages/aoac_jaoac/copyright.pdf
dcterms.rightsHolderAoac International
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Orgânica - IQ