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Authors: Zamora-Gálvez A, Mayorga-Matinez CC, Parolo C, Pons J, Merkoçi A
Article Title: Magnetic nanoparticle-molecular imprinted polymer: A new impedimetric sensor for tributyltin detection.
Publication date: 2017
Journal: Electrochemistry Communications
Volume: 82
Page numbers: 6-11.
DOI: 10.1016/j.elecom.2017.07.007
Alternative URL: https://www.researchgate.net/publication/318386237_Magnetic_nanoparticle-molecular_imprinted_polymer_A_new_impedimetric_sensor_for_tributyltin_detection
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
Template and target information: tributyltin, TBT
Author keywords: electrochemical impedance spectroscopy, pollutants, Electrochemical sensor
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