30 January 1990 Optical Fibre Sensor For Measuring pH In Physiological Range
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Proceedings Volume 1085, Optical Fibres and Their Applications V; (1990) https://doi.org/10.1117/12.952991
Event: Optical Fibers and Their Applications V, 1989, Warsaw, Poland
The principle of fibre optic pH sensor operation is given in this paper. PH measurement in 7.0-7.5 range is based on changing of optical property of a indicator. The indicator is sensitive to the hydrogen ion concentration in the water solution. Microspheres of the polymer XAD-2 (a styrene-divinylbenzene copolymer) containing bound phenol red were used as a indicator. Such prepared indicator was inserted in optrode. The optrode was connected with transmitter and receiver by a bundle of glass fibres (multicomponent glass). Transmitter was done by using green LED while receiver construction was based on pin photodiode.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Witold Golunski, Witold Golunski, Ryszard Hypszer, Ryszard Hypszer, Jerzy Plucinski, Jerzy Plucinski, } "Optical Fibre Sensor For Measuring pH In Physiological Range", Proc. SPIE 1085, Optical Fibres and Their Applications V, (30 January 1990); doi: 10.1117/12.952991; https://doi.org/10.1117/12.952991

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