Magnetic nanoparticle-molecular imprinted polymer : a new impedimetric sensor for tributyltin detection
Zamora Gálvez, Alejandro (Institut Català de Nanociència i Nanotecnologia)
Mayorga-Martinez, Carmen C. (Institut Català de Nanociència i Nanotecnologia)
Parolo, Claudio (Institut Català de Nanociència i Nanotecnologia)
Pons Picart, Josefina (Universitat Autònoma de Barcelona. Departament de Química)
Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)

Date:	2017
Abstract:	Recently, molecular imprinted polymers (MIPs) were extensively used for separation and identification of specific molecules, replacing expensive and unstable biological receptors. Nonetheless, their application in electrochemical sensors has not been sufficiently explored. Here we report the use of a MIP as a specific receptor in a new highly sensitive tributyltin (TBT) electrochemical sensor. The sensor combines the specificity, pre-concentration capability and robustness of molecular imprinted polymer attached onto magnetic nanoparticles with the quantitative outputs of impedimetric measurements. The proposed device detects TBT in a concentration range of 5 pM to 5 μM with a low limit of detection (5. 37 pM), which is lower than the one recommended for TBT in sea water by the US Environmental Protection Agency (EPA). We believe that this new electrochemical sensor can play an important role in the monitoring of the quality of sea and fresh waters worldwide.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-260 European Commission 613844 Ministerio de Economía y Competitividad SEV-2013-0295 Ministerio de Economía y Competitividad MAT2014-52485-P
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Electrochemical impedance spectroscopy ; Pollutants ; Electrochemical sensor
Published in:	Electrochemistry communications, Vol. 82 (September 2017) , p. 6-11, ISSN 1388-2481

DOI: 10.1016/j.elecom.2017.07.007

Postprint 17 p, 898.2 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles