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Recent progress in disposable ion-selective sensors for environmental applications

Matzeu, Giusy and Zuliani, Claudio and Diamond, Dermot (2012) Recent progress in disposable ion-selective sensors for environmental applications. Advances in Science and Technology, 77 . pp. 65-70. ISSN 1662-0356

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Abstract

Solid-contact Ion Selective Electrodes (SC-ISEs) for the detection of lead have been prepared on screen-printed substrates in order to produce low-cost, disposable sensors for environmental monitoring. The materials used as solid contact layer, the deposition techniques used, and the layer thickness greatly affects the performance of the sensors. Poly(3-octylthiophene-2,5-diyl) (POT) and poly-3,4-ethylenedioxithiophene (PEDOT) have been employed in this investigation. For sensors prepared with POT, the batch reproducibility depends on the amount drop-cast, i.e., thickness. In case of PEDOT which is grown galvanostatically the trend is more complex and batch reproducibility appears to depend on the current density. In the latter case, both the film thickness and both the degree of overoxidation of the polymer appear to influence sensor reproducibility.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:environmental monitors; Conducting Polymer; Lead Detection; Water Quality
Subjects:Physical Sciences > Environmental chemistry
Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Publisher:Trans Tech Publications, Switzerland
Official URL:http://dx.doi.org/10.4028/www.scientific.net/AST.77.65
Copyright Information:© 2012 Trans Tech Publications
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland
ID Code:17458
Deposited On:17 Sep 2012 12:12 by Giusy Matzeu. Last Modified 29 Aug 2013 11:28

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