Diuron metabolite monitoring using electrochemical sensor-based molecular imprinting technology

Autor(es)

Zendron, Rafaela Lemes ; dos Santos, Paula Mantovani ; Tarley, Cesar Ricardo Teixeira ; Sotomayor, Maria D. P. T. ; Wong, Ademar

• Tipo de documento: Artigo Científico
• Fonte: Journal of Solid State Electrochemistry; v. N/A, p. 12-pg., 2025-01-15.

Resumo

In this work, the synthesis of molecularly imprinted polymers was carried out using allyl alcohol as functional monomer. The developed materials were characterized morphologically using confocal microscopy and electron microscopy (scanning and transmission). Furthermore, a chemical characterization of the polymers was performed using Fourier transform infrared spectroscopy (FTIR) and BET analysis with the intent of verifying the presence of functional groups and determining the specific surface areas. Aiming to prove that the developed polymer has selective and sensitive adsorption to 3,4-DCA, it was proposed an electrochemical sensor modified with Fe3O4@MIP. Under optimal analysis conditions using square wave voltammetry (SWV), the sensor showed a linear response range from 5.0 x 10(-7) to 1.6 x 10(-5) mol L-1 and a detection limit of 3.2 x 10(-8) mol L-1. The selectivity of the sensor was confirmed when compared with various chemical compounds. Finally, the sensor was applied to real environmental samples, where the results obtained were similar to the results obtained in the HPLC-UV (comparative method), demonstrating the viability of the proposed method. (AU)

• Processo FAPESP: 22/16154-6 - Síntese de nanopartículas magnéticas modificadas com MIP para identificação da 3,4-dicloroanilina através do método cromatográfico e eletroquímico
• Beneficiário: Rafaela Lemes Zendron
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 22/03553-0 - RADEs-MIP-CaP: desenvolvimento de dispositivos de análise rápida para monitoramento de PSA e sarcosina, biomarcadores de Câncer de Próstata (CaP) empregando polímeros biomiméticos baseados na tecnologia de impressão molecular
• Beneficiário: Maria Del Pilar Taboada Sotomayor
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático