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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Disposable and flexible electrochemical sensor made by recyclable material and low cost conductive ink

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Autor(es):
de Araujo Andreotti, Isabela Aparecida [1, 2] ; Orzari, Luiz Otavio [1] ; Camargo, Jessica Rocha [1] ; Faria, Ronaldo Censi [2] ; Marcolino-Junior, Luiz Humberto [3] ; Bergarnini, Marcio Fernando [3] ; Gatti, Alexandre [4] ; Janegitz, Bruno C. [1]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Dept Nat Sci Math & Educ, BR-13600970 Araras, SP - Brazil
[2] Univ Fed Sao Carlos, Ctr Exact Sci & Technol, BR-13560000 Sao Carlos, SP - Brazil
[3] Univ Fed Parana, Dept Chem, BR-81531980 Curitiba, Parana - Brazil
[4] FlackTek Inc, BR-13574290 Sao Carlos, SP - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 840, p. 109-116, MAY 1 2019.
Citações Web of Science: 4
Resumo

Disposable electrochemical sensors by using recyclable materials are an interesting alternative to produce electrochemical sensors with an extreme low cost. In addition, the screen-printing technique has been widely used to propose electrochemical devices with new conductive inks for different applications. In this context, we develop a disposable eco-friend sensor with relative cost low and easy production. A conductive ink was produced with nail polish and graphite powder. As a sensor substrate, we reuse polyethylene terephthalate (PET) from drink bottles. The characterizations of the proposed electrode were performed by using scanning electron microscopy, infrared microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The determination of hydroquinone (HQ), epinephrine (EP) and serotonin (5-HT) were chosen as proof of concept. Using square wave voltammetry, for HQ, the PET sensor showed a linear response in the concentration range of 5.0 to 100 mu mol L-1 with a detection limit (LOD) of 0.01 mu mol L-1. Differential pulse voltammetry was applied for EP and 5-HT detection, and the proposed electrode presented linear response in the range of 5.0 to 100 mu mol L-1 and 1.0 to 50 mu mol L-1 and LODs of 0.3 and 0.1 mu mol L-1 for EP and 5-HT, respectively. Then, the disposable PET sensor was applied in the determination of HQ in environmental and pharmaceutical samples and, EP and 5-HT in biological samples. The proposed electrode is simple to prepare and can be easily used for electrochemical sensing and biosensing. (AU)

Processo FAPESP: 17/21898-6 - Novos dispositivos condutores para aplicação em sensores e biossensores eletroquímicos
Beneficiário:Bruno Campos Janegitz
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 18/02162-1 - Sensores descartáveis utilizando papel impermeável e tinta condutora de grafite para detecção de analitos de interesse farmacêutico
Beneficiário:Jéssica Rocha Camargo
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 16/12697-4 - Sensores nanoestruturados modificado com grafeno e tapioca para determinação de compostos fenólicos e bases nitrogenadas
Beneficiário:Luiz Otávio Orzari
Linha de fomento: Bolsas no Brasil - Iniciação Científica