Polymer-Coated Quartz Crystal Microbalance Chemical Sensor for Heavy Cations in Water
Authors: Sartore, L.; Barbaglio, M.; Penco, M.; Bergese, P.; Bontempi, E.; Colombi, P.; Depero, L.E.
Source: Journal of Nanoscience and Nanotechnology, Volume 9, Number 2, February 2009 , pp. 1164-1168(5)
Publisher: American Scientific Publishers
Abstract:A flow type quartz crystal microbalance (QCM) (bio)chemical sensor was developed for the real time determination of heavy metal ions that is suitable for environmental monitoring. A new process has been developed which enables to obtain surface-modified gold electrodes with high heavy metal ions complexing ability. The sensing performances of the piezoelectric sensor used in a flow-through setup were investigated by monitoring the frequency variation induced by the presence of heavy metal ions, such as copper and lead, as model ions, in aqueous media. X-Ray Reflectivity (XRR) and Atomic Force Microscopy (AFM) were carried out to characterize the unmodified and modified gold surfaces.
Document Type: Research article
Publication date: 2009-02-01
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