Online trace detection of mercury ions with enhanced fluorescence excitation within metal-lined hollow-core fiber

Page view(s)
23
Checked on Apr 16, 2024
Online trace detection of mercury ions with enhanced fluorescence excitation within metal-lined hollow-core fiber
Title:
Online trace detection of mercury ions with enhanced fluorescence excitation within metal-lined hollow-core fiber
Journal Title:
Optics Letters
Publication Date:
25 August 2023
Citation:
Ding, H., Zhang, J., Liu, X., Zhu, Y., Dong, Z., Juan Hu, D. J., & Wang, G. (2023). Online trace detection of mercury ions with enhanced fluorescence excitation within metal-lined hollow-core fiber. Optics Letters, 48(19), 5145. https://doi.org/10.1364/ol.499994
Abstract:
In this Letter, we present a portable all-fiber fluorescent detection system based on metal-lined hollow-core fiber (MLHCF) for the ultra-sensitive real-time monitoring of mercury ions (Hg2+). The system employs a rhodamine derivative as the probe. The hollow core of the MLHCF serves as both the flow channel of the liquid sample and the waveguide of the optical path. The metal coating in the intermediate layer between the capillary and the polyimide (PI) coating in the MLHCF provides good light confinement, enhancing the interaction between the sample and the incident light for better fluorescence excitation and collection efficiency. Additionally, further enhancement is achieved by placing an inserted filter along the light path to reflect the excitation light back to the MLHCF. A 3-cm length of MLHCF enables simultaneous excitation of a 40-µL sample volume and collection of most of its fluorescent signal in all directions, thereby significantly contributing to its exceptional sensitivity with a limit of detection (LOD) of 2.3 ng/L. The all-fiber fluorescence-enhanced detection device also shows rapid response time, excellent reusability, and selectivity. This system presents an online, reproducible, and portable solution for the trace detection of Hg2+ and provides a promising way for detecting other heavy metal ions.
License type:
Publisher Copyright
Funding Info:
National Natural Science Foundation of China (62375121, 61875083, 61535005); Social Development Project of Jiangsu Province (BE2019761); Key Technology Research and Development Program of Shandong (2020CXGC011304).
Description:
© 2023 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
ISSN:
1539-4794
0146-9592
Files uploaded:

File Size Format Action
manuscript-revised-2-1-amended.pdf 671.93 KB PDF Request a copy