Fluorescence Detection of Hg2+ Based on Metal-lined Hollow Core Fiber

We have designed a structure for the sample trace detection on metal-lined hollow core fiber. The specific fluorescence reaction of rhodamine derivatives with Hg
²⁺
as the detection substance was used to detect a linear relationship between fluorescence intensity and the concentration of Hg
²⁺
in the range of 1.25-12.5 ng/L. The detection limit of the assay was 1.25 ng/L.