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dc.contributor.authorDelfino, José R. [UNESP]
dc.contributor.authorda Silva, José Luiz [UNESP]
dc.contributor.authorMarques, Aldaléa L.B.
dc.contributor.authorStradiotto, Nelson R. [UNESP]
dc.identifier.citationFuel, v. 260.
dc.description.abstractThis paper report the development of a new HPLC-pulsed amperometric detector (HPLC-PAD) for the determination of antioxidants using glass carbon electrode (GCE) modified with reduced graphene oxide (rGO) and gold nanoparticles (AuNPs). The modified electrode exhibited efficient electro-oxidation when it was applied in the analysis of three important antioxidants: N, N'-di-sec-butyl paraphenylenediamine (BPA), 2,6-Di-tert-butylphenol (TBP) and 2,6-Di-tert-butyl-4-methylphenol (BHT). The chromatographic separation was performed with an isocratic elution composed of acetonitrile/water (90:10% v/v) and 1% acetic acid. The chromatograms showed good separation of all components in periods of time less than 10 min. The developed method presented linear ranges of 5.0 × 10−6–1.3 × 10−4 mol L−1 (BPA), 2.5 × 10−6–1.0 × 10−4 mol L−1 (TBP) and 7.5 × 10−7–1.3 × 10−4 mol L−1 (BHT), and the analytical curves presented limits of detection of 1.2 × 10−7, 1.7 × 10−7 and 7.8 × 10−8 mol L−1 for BPA, TBP and BHT, respectively. The values obtained for the recovery studies conducted ranged from 97.3 ± 1.5% to 101.5 ± 2.1%. The results showed that the method is reliable, since it presented high sensitivity, precision and accuracy. The developed method was successfully applied for the determination of antioxidants in a sample of biokerosene, consisting of isoparaffins synthesized from fermented and hydroprocessed sugars. The determined concentrations were TBP 3.1 × 10−5 ± 5.5 × 10−6 mol L−1 and BHT 3.3 × 10−5 ± 2.9 × 10−6 mol L−1.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.subjectElectrochemical detection
dc.subjectGold nanoparticles
dc.subjectReduced graphene oxide
dc.titleAntioxidants detection in aviation biokerosene by high-performance liquid chromatography using gold nanoparticles anchored in reduced graphene oxideen
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFederal University of Maranhão (UFMA)
dc.contributor.institutionFluminense Federal University (UFF)
dc.description.affiliationChemistry Institute São Paulo State University (UNESP)
dc.description.affiliationDepartment of Chemical Technology Federal University of Maranhão (UFMA)
dc.description.affiliationBioenergy Research Institute São Paulo State University (UNESP)
dc.description.affiliationSchool of Industrial and Metallurgical Engineering Fluminense Federal University (UFF)
dc.description.affiliationUnespChemistry Institute São Paulo State University (UNESP)
dc.description.affiliationUnespBioenergy Research Institute São Paulo State University (UNESP)
dc.description.sponsorshipIdFAPESP: 2017/25329-6
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