Amplitude and Phase Fluorescence-Spectroscopy Methods for Dissolved Oxygen Concentration Evaluation: Comparative Practical Results

This paper shows the practical results from a detailed comparative study of amplitude and phase fluorescence-spectroscopy methods for dissolved oxygen concentration evaluation. These results were obtained with an implemented optoelectronic measurement system that guarantees near-optimal operation co...

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Bibliographic Details
Main Authors: Grillo, G.J., Perez, M.A., Valledor, M., Ramos, R.
Format: Conference Proceeding
Language:English
Subjects:
dissolved oxygen
Fluorescence
fluorescence lifetimes
Fluorescence spectroscopy
Optical modulation
Optical sensors
optical-fiber sensors
Optoelectronic and photonic sensors
Oxygen
Proportional control
Sensor systems
Signal analysis
Stimulated emission
Temperature control
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Summary:This paper shows the practical results from a detailed comparative study of amplitude and phase fluorescence-spectroscopy methods for dissolved oxygen concentration evaluation. These results were obtained with an implemented optoelectronic measurement system that guarantees near-optimal operation conditions for both methods and a commercial fluorescence optical-fiber sensor, which is excited by a continuous-regulated sinusoidal-amplitude modulated light beam. The comparison was made through the analysis of the time dependence of the fluorescent signal and the values of DC voltages proportional to amplitude and phase shift of the fluorescent emitted signal obtained for a constant dissolved oxygen concentration water sample at a controlled temperature
ISSN:1091-5281
DOI:10.1109/IMTC.2005.1604271