Picomolar-level electrochemical detection of thiocyanate in the saliva samples of smokers and non-smokers of tobacco using carbon dots doped Fe^sub 3^O^sub 4^ nanocomposite embedded on g-C^sub 3^N^sub 4^ nanosheets

Thiocyanate (SCN-) is a metabolite of cyanide detoxification with equivalent toxicity. The SCN-, even in trace concentration affects the health adversely. Notwithstanding various methods have been used for SCN- analysis, a fast and simple electrochemical process has been hardly ever tried. Herein a...

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Bibliographic Details
Published in:Electrochimica acta 2018-09, Vol.283, p.914
Main Authors: Ponnaiah, Sathish Kumar, Periakaruppan, Prakash, Vellaichamy, Balakumar, Paulmony, Tharmaraj, Selvanathan, Rayappan
Format: Article
Language:English
Subjects:
Body fluids
Carbon
Carbon dots
Carbon nitride
Chemical synthesis
Cyanides
Electrochemical analysis
Environmental monitoring
Infrared radiation
Iron oxides
Linearity
Nanocomposites
Nanosheets
Saliva
Sensors
Smoking
Thiocyanates
Tobacco
Toxicity
Well construction
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Summary:Thiocyanate (SCN-) is a metabolite of cyanide detoxification with equivalent toxicity. The SCN-, even in trace concentration affects the health adversely. Notwithstanding various methods have been used for SCN- analysis, a fast and simple electrochemical process has been hardly ever tried. Herein a novel material, carbon dots doped Fe3O4 embedded on g-C3N4 nanosheets (CDs/Fe3O4@g-C3N4) has been synthesized for the electrochemical detection of SCN- level in the saliva samples of smokers and non-smokers of tobacco. The synthesized material was characterized by FT-IR, HR-TEM. TGA, UV-Vis and XRD analysis. The linearity range exhibited by this sensor is wide (0.001-0.900 nM) and the detection limit is in picomolar. The proposed system can be very well applied for the construction of sensing devices for clinical diagnosis and environmental monitoring.
ISSN:0013-4686
1873-3859