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Proceedings Paper

Intensity- and lifetime-based luminescence optosensing of carbon dioxide
Author(s): Guillermo Orellana; Cesar de Dios; Maria C. Moreno-Bondi; Maria D. Marazuela
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Paper Abstract

The state-of-the-art of carbon dioxide fiberoptic sensing, using both steady-state and time- resolved luminescence measurements, is briefly reviewed. Particular emphasis is given to the authors' own research on carbon dioxide optical monitoring via an excited-state proton transfer to luminescent ruthenium (II) chelate complexes. This kind of pH transduction chemistry allows for determination of the analyte in gas or liquid phase using both emission intensity- and lifetime-based optodes using the technology (sources, detectors, electronics) already developed for optical fiber oxygen sensing. Relevant factors that affect the performance of CO2 luminescent optosensors, such as the structure of the indicator dye, the immobilization procedure and support, the internal buffer of the sensitive layers and the working principle, are discussed as well. Finally, some recent applications in the authors' laboratories to fiberoptic carbon dioxide monitoring in spring water samples are presented.

Paper Details

Date Published: 29 September 1995
PDF: 12 pages
Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); doi: 10.1117/12.221729
Show Author Affiliations
Guillermo Orellana, Univ. Complutense de Madrid (Spain)
Cesar de Dios, Univ. Complutense de Madrid (Spain)
Maria C. Moreno-Bondi, Univ. Complutense de Madrid (Spain)
Maria D. Marazuela, Univ. Complutense de Madrid (Spain)


Published in SPIE Proceedings Vol. 2508:
Chemical, Biochemical, and Environmental Fiber Sensors VII

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