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Type: Journal article
Title: A dual sensor for pH and hydrogen peroxide using polymer-coated optical fibre tips
Author: Purdey, M.
Thompson, J.
Monro, T.
Abell, A.
Schartner, E.
Citation: Sensors, 2015; 15(12):31904-31913
Publisher: MDPI
Issue Date: 2015
ISSN: 1424-8239
Statement of
Malcolm S. Purdey, Jeremy G. Thompson, Tanya M. Monro, Andrew D. Abell, and Erik P. Schartner
Abstract: This paper demonstrates the first single optical fibre tip probe for concurrent detection of both hydrogen peroxide (H₂O₂) concentration and pH of a solution. The sensor is constructed by embedding two fluorophores: carboxyperoxyfluor-1 (CPF1) and seminaphtharhodafluor-2 (SNARF2) within a polymer matrix located on the tip of the optical fibre. The functionalised fibre probe reproducibly measures pH, and is able to accurately detect H₂O₂ over a biologically relevant concentration range. This sensor offers potential for non-invasive detection of pH and H₂O₂ in biological environments using a single optical fibre.
Keywords: dual sensor
fibre tip sensor
hydrogen peroxide probe
optical fibre
pH sensor
Rights: © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (
DOI: 10.3390/s151229893
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