JRM Vol.5 No.3 pp. 214-219
doi: 10.20965/jrm.1993.p0214


Optrode Type Oxygen Sensor

Eiji Toba and Masayo Ichikawa

Faculty of Textile Science and Technology, Shinshu University, 5-15-1, Tokida, Ueda, Nagano 386, Japan

February 10, 1993
February 26, 1993
June 20, 1993
Fiber options, Oxygen concentration, Phosphorescence, Quenching phenomenon, Ru(bpy)32+, In vivo
This paper describes a fiber optic oxygen sensor using phosphorescence and its application to clinical examinations. Since the quenching ratio of phosphorescence is proportional to oxygen partial pressure by the SternVolmer's formula, it is possible to estimate the oxygen concentration from the measured emission intensity. Combining an optical bundle with a luminescent material: Ru(bpy)32+/Nafion membrane, we have fabricated a luminous probe. This probe was experimentally investigated and was observed as having the characteristics of an oxygen concentration sensor in visible light. The probes were demonstrated to have certain advantages for example they can be operated in both liquid and gas phases. Also, they are stable to pH and flow velocities. As a clinical application, the probe can reliably measure oxygen concentrations of whole blood in vivo.
Cite this article as:
E. Toba and M. Ichikawa, “Optrode Type Oxygen Sensor,” J. Robot. Mechatron., Vol.5 No.3, pp. 214-219, 1993.
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