28 September 2015 A fluorescent optical fibre chemosensor for mercury detection
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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96346C (2015) https://doi.org/10.1117/12.2194588
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil
Abstract
A proof-of-concept mercury probe was developed based on covalent attachment of a chemical coating to optical fibre. The sensing element comprised a dansyl derivative and crown ether moiety, acting as fluorophore and metal ion chelator respectively. An ON-OFF type fluorescence (quench) occurred upon binding of mercury ions, via an intramolecular charge transfer mechanism, in aqueous solution in the 909nM-90.9μM (247 ppb -24.7 ppm) concentration range. A washing protocol was identified for sensor regeneration allowing the probe to be re-used.
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Stephen P. Wren, Stephen P. Wren, Tong Sun, Tong Sun, Kenneth T. V. Grattan, Kenneth T. V. Grattan, } "A fluorescent optical fibre chemosensor for mercury detection", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96346C (28 September 2015); doi: 10.1117/12.2194588; https://doi.org/10.1117/12.2194588
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