Thin film trichloroethylene electrochemical sensor

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2004 English Publisher:Elsevier BVJournal:Biosensors and Bioelectronics, volume 20, pages 25-32 (issn: 0956-5663,

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Authors: Min-Hua, Chen; Chung-Chiun, Liu; Tse-Chuan, Chou;

doi: 10.1016/j.bios.2004.01.017

pmid: 15142573

Thin film trichloroethylene electrochemical sensor

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Abstract

Pt-Ti and Pb-Pt-Ti thin films were deposited on alumina substrates by sputtering in Ar gas. In this study, an electrodeposited Pb-modified Pt-Ti thin film working electrode was prepared. Optimal sensing conditions were found to be -2.10 V (versus Ag/Ag+ with 0.1 M tetrabutylammonium perchlorate (TBAP) in acetonitrile (AN) solution) sensing potential, 250 rpm agitation rate. At room temperature, the response time was 15 s (90% response time). The correlation of sensing response current, id, and trichloroethylene (TCE) concentration, CL, is id = 2.86CL in the range from 100 to 700 ppm TCE. Additionally, the rate constant of (TCE) cathodic reduction was found to be 2.434 x 10(-3) cm(-1) s(-1).

Related Organizations

National Cheng Kung University
Taiwan
Case Western Reserve University
United States

Keywords

Titanium, Transducers, Reproducibility of Results, Membranes, Artificial, Biosensing Techniques, Equipment Design, Complex Mixtures, Sensitivity and Specificity, Trichloroethylene, Equipment Failure Analysis, Coated Materials, Biocompatible, Lead, Electrochemistry, Electrodes, Oxidation-Reduction, Water Pollutants, Chemical, Environmental Monitoring, Platinum

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