Second-order chromatographic photochemically induced fluorescence emission data coupled to chemometric analysis for the simultaneous determination of urea herbicides in the presence of matrix co-eluting compounds

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dc.citation.titleAnalytical Methodsen
dc.citation.volume15
dc.creatorArancibia, Juan Alberto
dc.creatorEscandar, Graciela Mónica
dc.date.accessioned2019-02-08T20:16:43Z
dc.date.available2019-02-08T20:16:43Z
dc.date.issued2014-04-29
dc.descriptionThis paper presents a novel approach for the simultaneous determination of isoproturon, rimsulfuron and monuron, three widely used urea-derivative herbicides, in interfering environmental samples, combining the advantages of photoinduced fluorescence (PIF) emission, liquid chromatography and second-order chemometric algorithms. Chromatographic detection is performed with a fast-scanning spectrofluorimeter, which allowed efficient collection of PIF through a post-column photoreactor. Thus, second-order elution time-PIF emission data matrices are rapidly obtained (in less than 4 min) using a chromatographic system operating in an isocratic regime using a minimal amount of organic solvent. The goal of the present study was the successful resolution of a system in the presence of foreign compounds which can be present in real samples. The study was employed for the discussion of the scope of the applied second-order algorithms selected for data processing, namely parallel factor analysis (PARAFAC), multivariate curve resolution-alternating least-squares (MCR-ALS), and multidimensional and unfolded partial least-squares coupled to residual bilinearization (N- and U-PLS/RBL). U-PLS/RBL showed the best performance to quantify the herbicides, even when the foreign compounds showed very similar spectral and time profiles to the analytes. The quality of the proposed technique was assessed on the basis of the analytical recoveries from different types of water samples spiked with analytes and other selected agrochemicals. After solid-phase extraction, reaching a preconcentration factor of 50, detection limits of 2.9, 2.4, and 1.7 ng mL−1 for isoproturon, rimsulfuron, and monuron, respectively, were obtained in those interfering matrices, with relative prediction errors lower than 5%.es
dc.description.filFil: Arancibia, Juan Alberto. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.es
dc.description.filFil: Escandar, Graciela Mónica. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.es
dc.description.sponsorshipUniversidad Nacional de Rosario (Argentina)es
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET)es
dc.description.sponsorshipAgencia Nacional de Promoción Científica y Tecnológica (ANPCyT): Proyecto 2010-0084es
dc.formatapplication/pdf
dc.format.extent5503-5511
dc.identifier.issn1759-9660
dc.identifier.urihttp://hdl.handle.net/2133/13921
dc.language.isoenges
dc.publisherRoyal Society of Chemistryes
dc.relation.publisherversionhttp://dx.doi.org/10.1039/C4AY00705Kes
dc.relation.publisherversionhttps://pubs.rsc.org/en/Content/ArticleLanding/2014/AY/C4AY00705K#!divAbstractes
dc.rightsopenAccesses
dc.rights.holderUniversidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticases
dc.rights.holderArancibia, Juan Albertoes
dc.rights.holderEscandar, Graciela Mónicaes
dc.rights.holderRoyal Society of Chemistryes
dc.rights.textAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)es
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es*
dc.subjectDetermination of isoproturones
dc.subjectRimsulfurones
dc.subjectUrea-derivative herbicideses
dc.subjectPhotoinduced fluorescence (PIF) emissiones
dc.subjectLiquid chromatographyes
dc.subjectSecond-order calibrationes
dc.titleSecond-order chromatographic photochemically induced fluorescence emission data coupled to chemometric analysis for the simultaneous determination of urea herbicides in the presence of matrix co-eluting compoundses

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