ISSN: 0090-3973
Page Count: 5

A Fiber Optic Chemical Sensor for Measurement of Groundwater pH

Maher, MH
Assistant professor, Department of Civil and Environmental Engineering, and research assistant professor, Fiber Optic Material Research Program,Rutgers University,NJ,
Member ASTM,

Shahriari, MR
Assistant professor, Department of Civil and Environmental Engineering, and research assistant professor, Fiber Optic Material Research Program,Rutgers University,NJ,

(Received 15 May 1992; accepted 10 March 1993)

Abstract

A fiber optic chemical sensor was developed for measurement of pH in groundwater. The sensor consists of a porous polymeric film immobilized with pH indicator, housed in a porous probe. The optical spectral characteristics of the sensor showed very good sensitivity to changes in the pH levels tested when visible light (380 to 780 nm) was used. The sensor/probe system was tested in a laboratory environmental chamber and showed very-good stability and reversibility under various confining pressures and flow rates.

Keywords:
pH sensor, fiber optic chemical seanor, groundwater monitoring, environmental chamber

Paper ID: JTE11789J
DOI: 10.1520/JTE11789J
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