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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | Federal University of Maranhão (UFMA) | - |
Autor(es): dc.contributor | Fluminense Federal University (UFF) | - |
Autor(es): dc.creator | Delfino, José R. [UNESP] | - |
Autor(es): dc.creator | da Silva, José Luiz [UNESP] | - |
Autor(es): dc.creator | Marques, Aldaléa L.B. | - |
Autor(es): dc.creator | Stradiotto, Nelson R. [UNESP] | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:32:53Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:32:53Z | - |
Data de envio: dc.date.issued | 2020-12-11 | - |
Data de envio: dc.date.issued | 2020-12-11 | - |
Data de envio: dc.date.issued | 2020-01-14 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1016/j.fuel.2019.116315 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/201201 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/201201 | - |
Descrição: dc.description | This 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. | - |
Descrição: dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | - |
Descrição: dc.description | Chemistry Institute São Paulo State University (UNESP) | - |
Descrição: dc.description | Department of Chemical Technology Federal University of Maranhão (UFMA) | - |
Descrição: dc.description | Bioenergy Research Institute São Paulo State University (UNESP) | - |
Descrição: dc.description | School of Industrial and Metallurgical Engineering Fluminense Federal University (UFF) | - |
Descrição: dc.description | Chemistry Institute São Paulo State University (UNESP) | - |
Descrição: dc.description | Bioenergy Research Institute São Paulo State University (UNESP) | - |
Descrição: dc.description | FAPESP: 2017/25329-6 | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Fuel | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | Antioxidants | - |
Palavras-chave: dc.subject | Biokerosene | - |
Palavras-chave: dc.subject | Electrochemical detection | - |
Palavras-chave: dc.subject | Gold nanoparticles | - |
Palavras-chave: dc.subject | HPLC | - |
Palavras-chave: dc.subject | Reduced graphene oxide | - |
Título: dc.title | Antioxidants detection in aviation biokerosene by high-performance liquid chromatography using gold nanoparticles anchored in reduced graphene oxide | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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