Issue 8, 1984
From the journal:

Analyst

Fibre-optic pH probe based on the use of an immobilised colorimetric indicator

(The late)Gordon F. Kirkbright,   Ramaier Narayanaswamy  and  Neal A. Welti  

Abstract

The construction of a pH sensor, having the configuration of a probe, is described. The probe utilises a plastic-fibre bundle at the end of which is fabricated a sensitive tip consisting of a styrene-divinylbenzene copolymer supporting an adsorbed colorimetric pH indicator, which is retained in position by a membrane of polytetrafluoroethylene (PTFE). Changes in pH in the vicinity of the sensitive tip cause a variation in the attenuation of specific reflected visible radiation bands. Initial results and performance specifications using bromothymol blue as the colorimetric indicator are presented.

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Article information

DOI
https://doi.org/10.1039/AN9840901025
Article type
Paper

Analyst, 1984,109, 1025-1028

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Fibre-optic pH probe based on the use of an immobilised colorimetric indicator

G. F. Kirkbright, R. Narayanaswamy and N. A. Welti, Analyst, 1984, 109, 1025 DOI: 10.1039/AN9840901025

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