Abstract
This paper reports a simple fluorescence-based tapered fiber optic probe for fluoride ion having a detection range of $2.08 \times 10^{\mathrm { {-6}}}$ – $2.005 \times 10^{\mathrm { {-4}}}$ M. The performance of the tapered probe is evaluated with respect to the probes that consist of combinations of bare uncladded multimode optical fibers. The effect of fluorescence quenching of a natural dye curcumin in the presence of fluoride ion is used in the implementation of the probes. The probe effectively uses multiple mechanisms for the excitation and collection of fluorescence from the medium enabling higher sensitivity compared with conventional spectrophotometry especially at very low concentrations of fluoride.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have