Electrochemical sensing using magnetic molecularly imprinted polymer particles previously captured by a magneto-sensor
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Data
2018-05-01
Autores
Ruiz-Córdova, Gerson A. [UNESP]
Khan, Sabir [UNESP]
Gonçalves, Luís Moreira
Pividori, Maria Isabel
Picasso, Gino
Sotomayor, Maria Del Pilar T. [UNESP]
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Resumo
The determination of 1-chloro-2,4-dinitrobenzene (CDNB) was used as a proof-of-concept to a simple analytical practical configuration applying magnetic molecularly imprinted particles (mag-MIPs). Mag-MIPs were captured from an emulsion by a home-made magneto-sensor (where a small magnet was entrapped by a graphite-epoxy composite) and then, this sensor, was transferred to the solution containing the analyte, where, after binding to the mag-MIPs, the analyte was directly analysed using differential pulse voltammetry (DPV) since the magneto-sensor acted as the working electrode. After optimization, a detection limit of 6.0 μmol L−1 with a RSD of 2.7% was achieved along with suitable recoveries and selectivity. This methodology offers a different approach for electroanalytical methodologies using mag-MIPs.
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Palavras-chave
2,4-Dinitrochlorobenzene (CDNB), Electroanalysis, Magnetic beads, Modified working electrode, Nanoparticles, Stripping voltammetry
Como citar
Talanta, v. 181, p. 19-23.