A new electrochemical platform based on carbon black paste electrode modified with ?-cyclodextrin and hierarchical porous carbon used for the simultaneous determination of dipyrone and codeine

Autor(es)

Wong, Ademar ^{[1, 2]} ; Riojas, Andy Cardenas ^[3] ; Baena-Moncada, Angelica M. ^[3] ; Sotomayor, Maria D. P. T. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] State Univ Sao Paulo UNESP, Inst Chem, Dept Analyt Chem, Araraquara, SP - Brazil

^[2] Natl Inst Detect Alternat Technol Toxicol Evaluat, Araraquara, SP - Brazil

^[3] Univ Nacl Ingn, Fac Ciencias, Lab Invest Electroquim Aplicada, Av Tupac Amaru 210, Lima - Peru

• Tipo de documento: Artigo Científico
• Fonte: Microchemical Journal; v. 164, MAY 2021.
• Citações Web of Science: 0

Resumo

The present study reports the simultaneous determination of dipyrone and codeine by a simple, fast and low-cost method using carbon black paste electrode (CBPE) modified with ?-cyclodextrin (CD) and hierarchical porous carbon (HPC). Using optimum conditions, the CD-HPC/CBPE sensor proposed in this study presented excellent electrochemical catalysis. Based on square wave voltammetry (SWV) analysis, linear concentration ranges of 0.46 to 35 ?mol L-1 and 0.5 to 38 ?mol L-1 were obtained for dipyrone and codeine, respectively, with nanomolar limits of detection for both analytes. The proposed sensor exhibited good stability, satisfactory repeatability and high sensibility in the determination of the analytes of interest. The application of the sensor in real samples was found to be successful, with recovery rates ranging from 96 to 106%. The method proposed in this study was found to be reliable for the simultaneous detection of dipyrone and codeine in different matrices. (AU)

• 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
• Processo FAPESP: 19/00677-7 - RADes-MIP - preparação e síntese de materiais para desenvolvimento de dispositivos de análise rápida para monitoramento de poluentes emergentes usando polímeros biomiméticos altamente seletivos baseados na tecnologia de impressão molecular
• Beneficiário: Maria Del Pilar Taboada Sotomayor
• Modalidade de apoio: Auxílio à Pesquisa - Regular