Optical sensors for corrosion systems: I. Oxygen sensing

Francis Guillaume, Karl Greden, W. H. Smyrl

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)J213-J219
JournalJournal of the Electrochemical Society
Volume155
Issue number8
DOIs
StatePublished - Jul 11 2008

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