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