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Reference type: Conference Proceeding
Authors: Queirós RB, Silva SO, Sales MGF, Noronha JP, Frazao O, Jorge PAS, Aguilar GG
Publication date: 2010
Article title: Optical cavity fibre sensor for detection of microcystin-LR in water.
Page numbers: Art. No. 76531N
DOI: 10.1117/12.865004 Alternative URL: http://link.aip.org/link/?PSI/7653/76531N/1

Proceedings title: Fourth European Workshop on Optical Fibre Sensors
Editors: Santos JL, Culshaw B, Lopez-Higuera JM, MacPherson WN
Publisher: SPIE
City: Porto, Portugal
ISBN: 0277-786X
Volume number: 7653
Conference information: SPIE Proceedings

Abstract: The deterioration of water quality by Cyanobacteria causes outbreaks and epidemics associated with harmful diseases in Humans and animals because of the released toxins. Microcystin-LR (mcyst) is one of the most widely studied hepatotoxin and World Health Organization recommends a maximum value of 1 μg L-1 of mcyst in drinking-water. Therefore, there is a great demand for remote, real-time sensing techniques to detect and quantify the presence of mcyst. In this work a Fabry-Perot sensing probe based on a fibre tip coated with a mcyst sensitive thin film is presented. Highly specific recognition membranes, using sol-gel based Molecular Imprinted Polymers (MIPs), were developed to quantify microcystins in water, showing great potential in the analysis of this kind of samples. The fibre Fabry-Perot MIP sensor shows a linear response to mcyst concentration with a sensitivity of -13.2 ±} 0.4 nm L μg-1.
Template and target information: Microcystin-LR, mcyst

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