11 October 2013 Detecting weak fluorescence turn-on in the presence of Pb2+ heavy metal ion using coaxial fiber optic sensor
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Proceedings Volume 8915, Photonics North 2013; 89151I (2013) https://doi.org/10.1117/12.2037100
Event: Photonics North 2013, 2013, Ottawa, Canada
Abstract
This paper is devoted to examining the ability of a coaxial fiber-optic sensor (FOS) in detecting weak fluorescent light and weak fluorescence “turn-on” in the presence of trace heavy metal ion Pb2+. The captured fluorescent signal is detected by the Ocean Optics QE65000 spectrometer. The stock solutions include Pb2+ acetate in water (0.01 M) and a small molecule probe in water. The preliminary experiment shows that this FOS offers the Pb2+ detection limit (DL) of 1.26×10-4 mg/mL. The advantages, limitations and further improvements of this coaxial FOS are discussed in comparison with the bench-top instruments in terms of the abilities of signal light capture and stray excitation light suppression.
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Jianjun Ma, Yasser Chiniforooshan, Wenhui Hao, Wojtek J. Bock, Zhi Yuan Wang, "Detecting weak fluorescence turn-on in the presence of Pb2+ heavy metal ion using coaxial fiber optic sensor", Proc. SPIE 8915, Photonics North 2013, 89151I (11 October 2013); doi: 10.1117/12.2037100; https://doi.org/10.1117/12.2037100
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