A multi-channel fiber optic photoluminescence system was developed for real time, in situ and continuous
quantitative monitoring of chemical parameters in analytes, with the advantages of ease of use and low cost in
manufacturing. The system sequentially excites 8 optodes and measures the resulting photoluminescence with a single
photomultiplier. The oxygen sensitive phosphorescent dye or pH sensitive fluorescent dye in the optodes transduces the
activity of an enzyme genetically engineered to detect a specific chemical species such as a chlorinated ethene. System
operation is described and the relative signal is compared to measurements made with single channel system based on a
commercial spectrometer.
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