Nguyen, TH, Venugopala, T, Chen, S et al. (5 more authors) (2014) Fluorescence based fibre optic pH sensor for the pH 10-13 range suitable for corrosion monitoring in concrete structures. Sensors and Actuators B: Chemical, 191. pp. 498-507. ISSN 0925-4005
Abstract
The design, development and evaluation of an optical fibre pH sensor for monitoring pH in the alkaline region are discussed in detail in this paper. The design of this specific pH sensor is based on the pH induced change in fluorescence intensity of a coumarin imidazole dye which is covalently attached to a polymer network and then fixed to the distal end of an optical fibre. The sensor provides a response over a pH range of 10.0–13.2 with an acceptable response rate of around 50 min, having shown a very good stability over a period of longer than 20 months thus far. The sensor has also demonstrated little cross-sensitivity to ionic strength (IS) and also excellent photostability through a series of laboratory tests. These features make this type of sensor potentially well suited for in situ long term monitoring of pH in concrete structures, to enhance structural monitoring in the civil engineering sector.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2013 Published by Elsevier B.V. This is an author produced version of a paper published in Sensors and Actuators B: Chemical. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Optical fibre sensor; Fluorescent sensor; pH sensor; High pH values; Corrosion monitoring; Coumarin dye |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 May 2016 14:35 |
Last Modified: | 16 Nov 2016 09:21 |
Published Version: | http://dx.doi.org/10.1016/j.snb.2013.09.072 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.snb.2013.09.072 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:97598 |