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.creator Arancibia, Juan Alberto
dc.creator Escandar, Graciela Mónica
dc.date.accessioned 2019-02-08T20:16:43Z
dc.date.available 2019-02-08T20:16:43Z
dc.date.issued 2014-04-29
dc.identifier.issn 1759-9660
dc.identifier.uri http://hdl.handle.net/2133/13921
dc.description This 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.sponsorship Universidad Nacional de Rosario (Argentina) es
dc.description.sponsorship Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) es
dc.description.sponsorship Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT): Proyecto 2010-0084 es
dc.format application/pdf
dc.format.extent 5503-5511
dc.language.iso eng es
dc.publisher Royal Society of Chemistry es
dc.rights openAccess es
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es *
dc.subject Determination of isoproturon es
dc.subject Rimsulfuron es
dc.subject Urea-derivative herbicides es
dc.subject Photoinduced fluorescence (PIF) emission es
dc.subject Liquid chromatography es
dc.subject Second-order calibration es
dc.title 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 es
dc.rights.holder Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas es
dc.rights.holder Arancibia, Juan Alberto es
dc.rights.holder Escandar, Graciela Mónica es
dc.rights.holder Royal Society of Chemistry es
dc.relation.publisherversion http://dx.doi.org/10.1039/C4AY00705K es
dc.relation.publisherversion https://pubs.rsc.org/en/Content/ArticleLanding/2014/AY/C4AY00705K#!divAbstract es
dc.rights.text Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) es
dc.citation.title Analytical Methods en
dc.citation.volume 15
dc.description.fil Fil: Arancibia, Juan Alberto. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. es
dc.description.fil Fil: Escandar, Graciela Mónica. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. es


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