Determination of amino acids in sugarcane vinasse by ion chromatographic using nickel nanoparticles on reduced graphene oxide modified electrode

dc.contributor.authorda Silva, José Luiz [UNESP]
dc.contributor.authorBeluomini, Maísa Azevedo [UNESP]
dc.contributor.authorSedenho, Graziela Cristina [UNESP]
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:15:09Z
dc.date.available2018-12-11T17:15:09Z
dc.date.issued2017-09-01
dc.description.abstractThe present work is aimed at investigating nickel nanoparticles on reduced graphene oxide modified electrode as an amperometric detector along with anion-exchange chromatography. The modified electrode was found to exhibit electrocatalytic oxidation efficiently in relation to amino acids with high stability. The effects of hydroxide and acetate as mobile phase on the retention time, retention factor, separation factor, and peak resolution were subjected to thorough evaluation. The proposed method presented linear ranges from 2.5 × 10− 6 to 1.0 × 10− 3 mol L− 1 with excellent correlation coefficient of at least 0.9997 in optimized anion-exchange chromatographic conditions. The limits of detection for all the compounds analyzed ranged from 8.7 × 10− 7 to 2.0 × 10− 5 mol L− 1. The amperometric sensitivity was found to be within the range of 3.3 × 105 and 5.3 × 106 nA mol− 1 L. The recovery study showed that the method has good accuracy and repeatability, with recoveries between 95 ± 4.7 and 100 ± 1.7%. Experiment results obtained demonstrated that the sensor has relatively good long-term stability, accuracy, and sensitivity, besides being devoid of interference. The proposed analytical method was applied towards the determination of amino acids in sugarcane vinasse sample obtained from a sugar and ethanol plant.en
dc.description.affiliationSão Paulo State University (Unesp) Institute of Chemistry Araraquara Campus Department of Analytical Chemistry, Street Prof. Francisco Degni, 55, JardimQuitandinha
dc.description.affiliationUnespSão Paulo State University (Unesp) Institute of Chemistry Araraquara Campus Department of Analytical Chemistry, Street Prof. Francisco Degni, 55, JardimQuitandinha
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2014/23846-5
dc.format.extent374-382
dc.identifierhttp://dx.doi.org/10.1016/j.microc.2017.07.007
dc.identifier.citationMicrochemical Journal, v. 134, p. 374-382.
dc.identifier.doi10.1016/j.microc.2017.07.007
dc.identifier.file2-s2.0-85030454687.pdf
dc.identifier.issn0026-265X
dc.identifier.lattes0072173018005712
dc.identifier.scopus2-s2.0-85030454687
dc.identifier.urihttp://hdl.handle.net/11449/175282
dc.language.isoeng
dc.relation.ispartofMicrochemical Journal
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAmino acids
dc.subjectAmperometric detector
dc.subjectElectrochemical detection
dc.subjectStillage
dc.subjectWastewater
dc.titleDetermination of amino acids in sugarcane vinasse by ion chromatographic using nickel nanoparticles on reduced graphene oxide modified electrodeen
dc.typeArtigo
unesp.author.lattes0072173018005712
unesp.author.orcid0000-0002-7130-9684[1]
unesp.author.orcid0000-0001-8696-5978[3]

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