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Proceedings Paper

Fiber optic pH sensor for gastric measurements: preliminary results
Author(s): Eden Januario Netto; John I. Peterson; Binseng Wang
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Paper Abstract

This paper describes preliminary results on the development of a fiber optic pH sensor for gastric measurements. As the pH values in the gastric system vary from approximately 1 to 7, a combination of appropriate dyes to cover this broad range should be used. pH colorimetric indicators bound in polyacrylamide microspheres and light scattering particles are packed in a cellulosic dialysis tubing at the end of a pair of plastic optical fibers. The experimental setup uses a CCD spectrometer as a detector and a 386 compatible personal computer. All parameters can be set by software. Results with both one-dye and two-dye pH sensors are presented.

Paper Details

Date Published: 21 May 1993
PDF: 9 pages
Proc. SPIE 1886, Fiber Optic Sensors in Medical Diagnostics, (21 May 1993); doi: 10.1117/12.144828
Show Author Affiliations
Eden Januario Netto, National Institutes of Health (United States)
John I. Peterson, National Institutes of Health (United States)
Binseng Wang, National Institutes of Health (United States)


Published in SPIE Proceedings Vol. 1886:
Fiber Optic Sensors in Medical Diagnostics
Fred P. Milanovich, Editor(s)

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