Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell

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dc.contributor.authorSilva, Aline S. [UNESP]
dc.contributor.authorToth, Ildiko V.
dc.contributor.authorPezza, Leonardo [UNESP]
dc.contributor.authorPezza, Helena Redigolo [UNESP]
dc.contributor.authorLima, Jose L. F. C.
dc.contributor.institutionUniversidade do Porto
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:20:20Z
dc.date.available2014-05-20T14:20:20Z
dc.date.issued2011-10-01
dc.description.abstractA simple screening method was developed for the determination of glyphosate in water samples using a multi-pumping flow system. The proposed method is based on the reaction between glyphosate and p-dimethylaminocinnamaldehyde (p-DAC), in an acid medium where the reaction product can be measured spectrophotometrically at lambda(max) = 495 nm. An experimental design methodology was used to optimize the measurement conditions. The proposed method was applied to the determination of glyphosate in water samples in a concentration range from 0.5 to 10 mu g mL(-1). The limit of detection and quantification were 0.17 and 0.53 mu g mL(-1), respectively. The results obtained (88.5 to 104.5%) in recovery studies for the determination of glyphosate in different water samples indicated good accuracy and no matrix effect for the developed method. Samples were also analyzed by a confirmatory HPLC method, and agreement within the two set of results was found.en
dc.description.affiliationUniv Porto, Fac Farm, Dept Quim, REQUIMTE, P-4099030 Oporto, Portugal
dc.description.affiliationUniv Estadual Paulista UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFSE
dc.description.sponsorshipMCTES (Ministerio da Ciencia, Tecnologia e Ensino Superior)
dc.format.extent1031-1036
dc.identifierhttp://dx.doi.org/10.2116/analsci.27.1031
dc.identifier.citationAnalytical Sciences. Tokyo: Japan Soc Analytical Chemistry, v. 27, n. 10, p. 1031-1036, 2011.
dc.identifier.doi10.2116/analsci.27.1031
dc.identifier.issn0910-6340
dc.identifier.lattes5978908591853524
dc.identifier.lattes3192125098361121
dc.identifier.orcid0000-0003-0197-7369
dc.identifier.urihttp://hdl.handle.net/11449/26113
dc.identifier.wosWOS:000296315900010
dc.language.isoeng
dc.publisherJapan Soc Analytical Chemistry
dc.relation.ispartofAnalytical Sciences
dc.relation.ispartofjcr1.355
dc.relation.ispartofsjr0,424
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleDetermination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cellen
dc.typeArtigo
dcterms.rightsHolderJapan Soc Analytical Chemistry
unesp.author.lattes5978908591853524
unesp.author.lattes3192125098361121
unesp.author.orcid0000-0003-0197-7369[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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