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

dc.contributor.authorNavickiene, Sandro [UNESP]
dc.contributor.authorRibeiro, Maria Lúcia [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T20:01:30Z
dc.date.available2022-04-28T20:01:30Z
dc.date.issued2004-01-01
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.affiliationUniversidade Estadual Paulista-Unesp Depto. Química Orgânica Instituto de Química, CP 355, 14800-900, Araraquara, Sao Paulo
dc.description.affiliationUnespUniversidade Estadual Paulista-Unesp Depto. Química Orgânica Instituto de Química, CP 355, 14800-900, Araraquara, Sao Paulo
dc.format.extent435-438
dc.identifierhttp://dx.doi.org/10.1093/jaoac/87.2.435
dc.identifier.citationJournal of AOAC International, v. 87, n. 2, p. 435-438, 2004.
dc.identifier.doi10.1093/jaoac/87.2.435
dc.identifier.issn1060-3271
dc.identifier.scopus2-s2.0-2542471574
dc.identifier.urihttp://hdl.handle.net/11449/224603
dc.language.isoeng
dc.relation.ispartofJournal of AOAC International
dc.sourceScopus
dc.titleDetermination of fluquinconazole, pyrimethanil, and clofentezine residues in fruits by liquid chromatography with ultraviolet detectionen
dc.typeArtigo
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.departmentQuímica Orgânica - IQARpt

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