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15 February 1994 Optical pH sensor for physiological pH measurement
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Proceedings Volume 2085, Biochemical and Medical Sensors; (1994) https://doi.org/10.1117/12.168757
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary
Abstract
A miniature optical sensor based on the fluorescent indicator, 8-hydroxyl-1,3,6-pyrene trisulfonic Acid Trisodium Salt (HOPSA), was developed for physiological pH measurement. Dowex-1 strongly basic anion exchange resin was used as a medium to immobilize the indicator on the end of an optical fiber to form a pH sensing layer. Polyetherurethane was dip- coated onto the sensing layer as the permeable membrane for H+. The properties of the sensor were assessed and found to be suitable for monitoring physiological pH values.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sifu Zhang, Peter J. Rolfe, and Yappa A.B.D. Wickramasinghe "Optical pH sensor for physiological pH measurement", Proc. SPIE 2085, Biochemical and Medical Sensors, (15 February 1994); https://doi.org/10.1117/12.168757
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