Detection of cyanide and sulfide ions by different mechanisms using a fluorescent chemical sensor containing a fluorophore and a potential ligand for metal complexes
- Authors
- Kim, Min Ji; Han, Su Bin; Lee, Soo Suk
- Issue Date
- Sep-2023
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- ANALYTICAL METHODS, v.15, no.37, pp 4918 - 4925
- Pages
- 8
- Journal Title
- ANALYTICAL METHODS
- Volume
- 15
- Number
- 37
- Start Page
- 4918
- End Page
- 4925
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/25512
- DOI
- 10.1039/d3ay00962a
- ISSN
- 1759-9660
1759-9679
- Abstract
- Here, we present a fluorescent chemical sensor for the simultaneous detection of CN- and S2- ions, which are highly toxic to humans and the environment. When the BPMA-Flu-Cu2+ complex comprising BPMA-Flu, a fluorophore combined with Cu2+, was used, the fluorescence was turned off. However, the fluorescence was turned on again by the addition of CN- and S2- ions. BPMA-Flu is a unique compound containing both a fluorophore and a ligand coordinated to a metal ion. This strategy using the proposed BPMA-Flu-Cu2+-based fluorescent chemical sensor facilitated quantitative analysis of CN- and S2- ions with high selectivity and sensitivity, despite varying detection mechanisms. The detection limit was as low as 290 nM and 74 nM for CN- and S2- ions, respectively. The sensor was selective and excluded other anions at concentrations 10-fold higher than those of CN- and S2- ions. The recovery rates did not exceed 10% of the original values for the detection of CN- ions in rainwater and tap water. These results indicate acceptable accuracy and precision for practical applications. A fluorescent chemical sensor for the detection of CN- and S2- was demonstrated based on BPMA-Flu-Cu2+ complex. Addition of Cu2+ to BPMA-Flu quenches fluorescence, but addition of CN- and S2- restores fluorescence.
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Collections - College of Medical Sciences > Department of Pharmaceutical Engineering > 1. Journal Articles
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