期刊
TALANTA
卷 181, 期 -, 页码 19-23出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2017.12.085
关键词
2,4-Dinitrochlorobenzene (CDNB); Electroanalysis; Magnetic beads; Modified working electrode; Nanoparticles; Stripping voltammetry
资金
- Programa Nacional de Innovacion para Competitividad y Productividad - InnovatePeru [Convenio 513-INNOVATEPERU-ECIP-2015]
- CNPq [303690/2012-7, 465571/2014-0]
- FAPESP [2014/25264-3, 2014/50945-4, 2016/06926-0]
- IGI-Institute of Research of National University of Engineering of Lima - Peru [FC-F-24-2017]
- Spanish Ministry of Economy and Competitiveness (MINECO), Madrid [BIO2016-75751-R]
- PRODOC-CAPES. LMG [SFRH/BPD/76544/2011, FCT/13277/4/8/2015S]
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 mu mol 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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