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dc.contributor.authorRodríguez, José Antonio
dc.contributor.authorIbarra, Israel S.
dc.contributor.authorMiranda, Jose María
dc.contributor.authorBarrado Esteban, Enrique 
dc.contributor.authorSantos, Eva M.
dc.date.accessioned2017-10-17T10:15:46Z
dc.date.available2017-10-17T10:15:46Z
dc.date.issued2016
dc.identifier.citationAnalytical Methods, 8 (2016) 8466-8473es
dc.identifier.issn1759-9679es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/26385
dc.description.abstractA magnetic solid phase extraction method coupled to capillary electrophoresis for simultaneous determination of three azo dyes (sunset yellow, allure red and tartrazine) in wastewater samples was proposed. The method employs the dispersion of magnetic adsorbents in the sample. Variables involved in the retention+elution procedures were optimized using a simplex centroid design. Optimal conditions were: adsorbent composition magnetite+activated carbon+Fullerene (10:0.59:0.41), sample pH of 4.0, and a sample volume (Kl): weight of adsorbent (mg) ratio of 0.01. Under optimal conditions, it was obtained a linear range from 3.0+􀀀0.0 mg l+1 with limits of detection ranging from 1.0+ 2.0 mg l+1. The average recoveries of each dye at two spiked levels (10 and 25 mg l+1) ranged from 95+106% with relative standard deviations less than 10% in all cases. The proposed method was applied to analyze wastewater samples from different locations. Two samples were positive to the presence of tartrazine residues. The method proposed offers advantages in terms of simplicity, sensitivity, high efficiency, low cost, and short analysis time, making it an alternative for analysis of azo dyes in water samples and another complex matrix.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherRoyal Society of Chemistryes
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.classificationCapilary Electrophoresis, Magnetic Solid Phase Extraction, Azo dyes, Waste Wateres
dc.titleMagnetic solid phase extraction based on fullerene and activated carbon adsorbents for determination of azo dyes in water samples by capillary electrophoresises
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holderRoyal Society of Chemistryes
dc.identifier.doi10.1039/C6ay02631aes
dc.identifier.publicationfirstpage8466es
dc.identifier.publicationissue8es
dc.identifier.publicationlastpage8473es
dc.identifier.publicationtitleAnalytical Methodses
dc.peerreviewedSIes
dc.description.projectCONACYT (INFR2014-227999), Xunta de Galicia (2012/153)es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International


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