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Planar Array REDOX Cells and pH Sensors for ISS Water Quality and Microbe Detection

Buehler, Martin G. and Kuhlman, Gregory M. and Myung, Nosang V. and Keymeulen, Didier and Kounaves, Samuel P. and Newman, Dianne K. and Lies, Douglas (2003) Planar Array REDOX Cells and pH Sensors for ISS Water Quality and Microbe Detection. In: 2003 International Conference On Environmental Systems. SAE , pp. 1-8.

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This paper describes results acquired from E-Tongue 2 and E-Tongue 3 which are arrays of planar three-element electrochemical cells and pH sensors. The approach uses ASV (Anodic Stripping Voltammery) to achieve a detection limit, which in the case of Pb, is below one μM which is needed for water quality measurements. The richness of the detectable species is illustrated with Fe where seven species are identified using the Pourbiax diagram. The detection of multiple species is illustrated using Pb and Cu. The apparatus was used to detect the electroactivity of the metabolic-surrogate, PMS (phenazine-methosulphate). Finally, four types of pH sensors were fabricated and characterized for linearity, sensitivity, and responsiveness.

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Newman, Dianne K.0000-0003-1647-1918
Additional Information:© 2003 SAE International. Date Published: 2003-07-07. SAE Technical Paper 2003-01-2553. The work described in this paper was performed by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration and the Defense Advanced Research Projects Agency. The effort is supported by a grant from the National Aeronautics and Space Administration under the Advanced Environmental Monitoring and Control Program and by the Defense Advanced Research Projects Agency under the Single Layered and Imbedded Microbial Environments Program supporting a contract entitled Microbial detection using Biofilm Signal Amplification (Contract: N66001-02-C-8049). The authors are indebted to the NASA program manager, Darrell Jan, for his support. In addition, we are pleased to acknowledge the efforts of Dennis Martin and Kent Fung, Halcyon Microelectronics, Inc. Irwindale, CA in the fabrication of E-Tongue 3. File: ICES-REDOX3322.doc.
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Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
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SAE Technical Paper2003-01-2553
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Official Citation:Buehler, M., Kuhlman, G., Myung, N., Keymeulen, D. et al., "Planar Array REDOX Cells and pH Sensors for ISS Water Quality and Microbe Detection," SAE Technical Paper 2003-01-2553, 2003, doi:10.4271/2003-01-2553
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37625
Deposited By: Tony Diaz
Deposited On:16 Apr 2013 21:12
Last Modified:09 Nov 2021 23:30

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