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PEDOT: PSS/AuNPs-Based Composite as Voltammetric Sensor for the Detection of Pirimicarb.
Deller, Andrei E; Hryniewicz, Bruna M; Pesqueira, Camila; Horta, Rayta Paim; da Silva, Bruno José Gonçalves; Weheabby, Saddam; Al-Hamry, Ammar; Kanoun, Olfa; Vidotti, Marcio.
Afiliação
  • Deller AE; Grupo de Pesquisa em Macromoléculas e Interfaces, Universidade Federal do Paraná (UFPR), Curitiba 81531-980, PR, Brazil.
  • Hryniewicz BM; Grupo de Pesquisa em Macromoléculas e Interfaces, Universidade Federal do Paraná (UFPR), Curitiba 81531-980, PR, Brazil.
  • Pesqueira C; Grupo de Pesquisa em Macromoléculas e Interfaces, Universidade Federal do Paraná (UFPR), Curitiba 81531-980, PR, Brazil.
  • Horta RP; Grupo de Cromatografia e Técnicas de Microextração, Departamento de Química, Universidade Federal do Paraná-UFPR, C.P. 19032, Curitiba 81531-980, PR, Brazil.
  • da Silva BJG; Grupo de Cromatografia e Técnicas de Microextração, Departamento de Química, Universidade Federal do Paraná-UFPR, C.P. 19032, Curitiba 81531-980, PR, Brazil.
  • Weheabby S; Measurement and Sensor Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany.
  • Al-Hamry A; Measurement and Sensor Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany.
  • Kanoun O; Measurement and Sensor Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany.
  • Vidotti M; Grupo de Pesquisa em Macromoléculas e Interfaces, Universidade Federal do Paraná (UFPR), Curitiba 81531-980, PR, Brazil.
Polymers (Basel) ; 15(3)2023 Jan 31.
Article em En | MEDLINE | ID: mdl-36772040
An electrochemical sensor for the pesticide Pirimicarb (PMC) has been developed. A screen-printed electrode (SPCE) was used and modified with the conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) and gold nanoparticles (AuNPs) to enhance electrochemical proprieties. Electrode characterizations were performed using scattering electron microscopy (SEM) and cyclic voltammetry (CV). With the SPCE/PEDOT:PSS/AuNPs modified electrode, a new peak at 1.0 V appeared in the presence of PMC related to the PMC oxidation. To elucidate the mechanism of PMC oxidation, Gas Chromatography-Mass Spectrometry (GC-MS), where two major peaks were identified, evidencing that the device can both detect and degrade PMC by an electro-oxidation process. Exploring this peak signal, it was possible the sensor development, performing detection from 93.81-750 µmol L-1, limits of quantification (LOQ) and detection (LOD) of 93.91 µmol L-1 and 28.34 µmol L-1, respectively. Thus, it was possible to study and optimization of PMC degradation, moreover, to perform detection at low concentrations and with good selectivity against different interferents using a low-cost printed electrode based on graphite modified with conductive polymer and AuNPs.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Polymers (Basel) Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça
Texto completo
Adicionar na Minha BVS
Imprimir
XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Polymers (Basel) Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça