Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.fuel.2022.124906 http://hdl.handle.net/11449/241969 |
Resumo: | This work reports the development of a composite material containing graphene oxide and pectin (GO-PEC) to increase the lead signal during the analysis of biofuels through differential pulse anodic stripping voltammetry. To this end, a glassy carbon electrode was used as substrate for the immobilization of the GO-PEC composite. This electrode was characterized through cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy, Raman spectroscopy and energy dispersive X-ray spectroscopy. The results obtained showed that the GO-PEC composite promoted a 90-fold increase in the intensity of the anodic stripping current of lead. The electrode containing the GO-PEC composite presented a linear range of 1.0 × 10−9 to 1.0 × 10−6 mol L−1 and a detection limit of 4.0 × 10−10 mol L−1. This device also exhibited reproducible and stable voltammetric responses as well as excellent selectivity for lead detection. The proposed electrode was applied for the determination of lead in biodiesel and biokerosene samples. Recovery tests and flame atomic absorption spectroscopy analyses confirmed that this electrode has excellent precision and accuracy for lead detection. These results show that the electrode developed in this work can be successfully used for lead monitoring in biofuel samples. |
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Repositório Institucional da UNESP |
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Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysisAnodic stripping analysisBiodieselBiokeroseneGraphene oxideLeadPectinThis work reports the development of a composite material containing graphene oxide and pectin (GO-PEC) to increase the lead signal during the analysis of biofuels through differential pulse anodic stripping voltammetry. To this end, a glassy carbon electrode was used as substrate for the immobilization of the GO-PEC composite. This electrode was characterized through cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy, Raman spectroscopy and energy dispersive X-ray spectroscopy. The results obtained showed that the GO-PEC composite promoted a 90-fold increase in the intensity of the anodic stripping current of lead. The electrode containing the GO-PEC composite presented a linear range of 1.0 × 10−9 to 1.0 × 10−6 mol L−1 and a detection limit of 4.0 × 10−10 mol L−1. This device also exhibited reproducible and stable voltammetric responses as well as excellent selectivity for lead detection. The proposed electrode was applied for the determination of lead in biodiesel and biokerosene samples. Recovery tests and flame atomic absorption spectroscopy analyses confirmed that this electrode has excellent precision and accuracy for lead detection. These results show that the electrode developed in this work can be successfully used for lead monitoring in biofuel samples.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Institute of Chemistry São Paulo State University (UNESP), São PauloBioenergy Research Institute São Paulo State University (UNESP), São PauloInstitute of Chemistry São Paulo State University (UNESP), São PauloBioenergy Research Institute São Paulo State University (UNESP), São PauloCNPq: 137482/2019-1FAPESP: 2017/22401-8FAPESP: 2017/25329-6FAPESP: 2019/13818-8Universidade Estadual Paulista (UNESP)da Conceição, Emanuela [UNESP]Buffon, Edervaldo [UNESP]Stradiotto, Nelson Ramos [UNESP]2023-03-02T06:27:58Z2023-03-02T06:27:58Z2022-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.fuel.2022.124906Fuel, v. 325.0016-2361http://hdl.handle.net/11449/24196910.1016/j.fuel.2022.1249062-s2.0-85132691821Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFuelinfo:eu-repo/semantics/openAccess2023-03-02T06:27:58Zoai:repositorio.unesp.br:11449/241969Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:44:00.403574Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
title |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
spellingShingle |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis da Conceição, Emanuela [UNESP] Anodic stripping analysis Biodiesel Biokerosene Graphene oxide Lead Pectin |
title_short |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
title_full |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
title_fullStr |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
title_full_unstemmed |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
title_sort |
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis |
author |
da Conceição, Emanuela [UNESP] |
author_facet |
da Conceição, Emanuela [UNESP] Buffon, Edervaldo [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author_role |
author |
author2 |
Buffon, Edervaldo [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
da Conceição, Emanuela [UNESP] Buffon, Edervaldo [UNESP] Stradiotto, Nelson Ramos [UNESP] |
dc.subject.por.fl_str_mv |
Anodic stripping analysis Biodiesel Biokerosene Graphene oxide Lead Pectin |
topic |
Anodic stripping analysis Biodiesel Biokerosene Graphene oxide Lead Pectin |
description |
This work reports the development of a composite material containing graphene oxide and pectin (GO-PEC) to increase the lead signal during the analysis of biofuels through differential pulse anodic stripping voltammetry. To this end, a glassy carbon electrode was used as substrate for the immobilization of the GO-PEC composite. This electrode was characterized through cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy, Raman spectroscopy and energy dispersive X-ray spectroscopy. The results obtained showed that the GO-PEC composite promoted a 90-fold increase in the intensity of the anodic stripping current of lead. The electrode containing the GO-PEC composite presented a linear range of 1.0 × 10−9 to 1.0 × 10−6 mol L−1 and a detection limit of 4.0 × 10−10 mol L−1. This device also exhibited reproducible and stable voltammetric responses as well as excellent selectivity for lead detection. The proposed electrode was applied for the determination of lead in biodiesel and biokerosene samples. Recovery tests and flame atomic absorption spectroscopy analyses confirmed that this electrode has excellent precision and accuracy for lead detection. These results show that the electrode developed in this work can be successfully used for lead monitoring in biofuel samples. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-01 2023-03-02T06:27:58Z 2023-03-02T06:27:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.fuel.2022.124906 Fuel, v. 325. 0016-2361 http://hdl.handle.net/11449/241969 10.1016/j.fuel.2022.124906 2-s2.0-85132691821 |
url |
http://dx.doi.org/10.1016/j.fuel.2022.124906 http://hdl.handle.net/11449/241969 |
identifier_str_mv |
Fuel, v. 325. 0016-2361 10.1016/j.fuel.2022.124906 2-s2.0-85132691821 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Fuel |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129110283649024 |