Artículos de revistas
Electrochemical sensing using magnetic molecularly imprinted polymer particles previously captured by a magneto-sensor
Fecha
2018-05-01Registro en:
Talanta, v. 181, p. 19-23.
0039-9140
10.1016/j.talanta.2017.12.085
2-s2.0-85039955235
2-s2.0-85039955235.pdf
Autor
National University of Engineering
Universidade Estadual Paulista (Unesp)
Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)
Universidade do Porto
Universidade de São Paulo (USP)
Universitat Autònoma de Barcelona
Institución
Resumen
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.