Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 155, Issue 8, Pages J213-J219Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.2926549
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Sensing the chemical environment in confined spaces that characterize localized corrosion requires special instrumentation beyond the capability of classical electrochemical instrumentation. We describe a fiber-optic oxygen sensor based on fluorescence quenching of a ruthenium phenanthroline complex that is small, fast, and rugged enough to be used in the field. The sensitivity of the dual-fiber probe is 0.9 Torr and 0.01 mg/L oxygen in the gas and aqueous phases, respectively. The sensor utilizes a polydimethylsiloxane matrix for the dye that will facilitate further miniaturization for corrosion studies. (C) 2008 The Electrochemical Society.
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