A paper-based colorimetric chemosensor for rapid and highly sensitive detection of sulfide for environmental monitoring
- Authors
- Thai, Duc Anh; Lee, Nae Yoon
- Issue Date
- 21-Mar-2021
- Publisher
- Royal Society of Chemistry
- Citation
- Analytical Methods, v.13, no.11, pp.1332 - 1339
- Journal Title
- Analytical Methods
- Volume
- 13
- Number
- 11
- Start Page
- 1332
- End Page
- 1339
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/80719
- DOI
- 10.1039/d1ay00074h
- ISSN
- 1759-9660
- Abstract
- In this study, we report on paper-based colorimetric detection of sulfide using a newly synthesized chemical acting as a chemosensor, based on the deprotonation mechanism. Paper strips were also fabricated and incorporated with the chemosensor for on-site monitoring. The presence of sulfide induced deprotonation of a hydroxyl group of the chemosensor, which eventually resulted in a distinct spectral change in the tube as well as a visible color change on a paper strip. The chemosensor showed a highly selective colorimetric response to sulfide by changing its color from colorless to yellow without any interference from a mixture containing other anions. Moreover, the chemosensor effectively differentiated sulfide from other thiols, including cysteine and glutathione. The chemosensor colorimetrically detected sulfide with a fast response time of 10 s under physiological conditions. Practically, the paper test strip enabled colorimetric visualization of as low as 30 μM sulfide and a good recovery in quantitative analysis in water samples. The introduced paper-based chemosensor is a promising colorimetric strategy with rapid, selective, and sensitive sensing abilities for sulfide monitoring in environmental water samples. © 2021 The Royal Society of Chemistry.
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