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HERO ID
5083583
Reference Type
Journal Article
Title
A sensitive and selective triple-channel optical assay based on red-emissive carbon dots for the determination of PFOS
Author(s)
Chen, Q; Zhu, P; Xiong, Jie; Gao, L; Tan, K
Year
2019
Is Peer Reviewed?
1
Journal
Microchemical Journal
ISSN:
0026-265X
EISSN:
1095-9149
Volume
145
Page Numbers
388-396
DOI
10.1016/j.microc.2018.11.003
Web of Science Id
WOS:000457513000051
Abstract
In this study, a simple, fast and cost-effective triple-channel optical assay for the determination of PFOS has been developed. The carbon quantum dots (CDs) were prepared by one-pot hydrothermal method and employed as probe for sensing PFOS. CDs react with PFOS to form ground-state complex, which brings about the intensity changes of three signals including fluorescence, UV vis absorption and resonance light scattering (RLS). And the changes of the fluorescence and absorption signals can be used for the visual detection of PFOS. And there is a certain relationship between the three-signal changes with the concentration of PFOS, respectively. The proposed assay exhibits good selectivity and sensitivity with a limit of detection (LOD) of 18.27 nmol/L in the fluorescence signal. Fluorescence lifetime, transmission electron microscopy (TEM) images, Fourier transform infrared (FTIR) and zeta potential were investigated for the mechanism study. Furthermore, this promising approach was also successfully applied to PFOS sensing in real water samples with RSD <= 2.09%.
Keywords
Perfluorooctane sulfonate (PFOS); Carbon dots; Triple-channel; Visualization
Tags
PFAS
•
Expanded PFAS SEM (formerly PFAS 430)
Perfluorooctane
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search Update (2013-2019)
WOS
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