Needle-type sensor array for simultaneous measurement of dissolved oxygen and redox potential in situ

ENVR 45

Ian Papautsky, Ian.Papautsky@uc.edu1, Jin-Hwan Lee, leej7@email.uc.edu1, Youngwoo Seo, seoy@email.uc.edu2, Tae-Sun Lim1, and Paul L. Bishop, Paul.Bishop@uc.edu2. (1) Department of Electrical and Computer Engineering, University of Cincinnati, 814 Rhodes Hall, Cincinnati, OH 45221, (2) Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0071
This paper describes new needle-type microelectrode array (MEA) sensors for in situ measurements of dissolved oxygen (DO) and oxidation-reduction potential (ORP). The sensors have a small tip size and exhibit high consistency due to batch fabrication, improved signal stability and faster response times. The sensors are being applied to simultaneous measurements of DO and ORP microprofiles in a live multi-species biofilm.
 

Recent Developments in Sensors and Sensor Networks for Contaminants in Environmental Systems
8:30 AM-11:45 AM, Monday, August 20, 2007 Boston Park Plaza -- Beacon Hill Rm, Oral

Division of Environmental Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007