Highly fluorescent N doped C-dots as sensor for selective detection of Hg2+ in beverages.
Spectrochim Acta A Mol Biomol Spectrosc
; 265: 120392, 2022 Jan 15.
Article
en En
| MEDLINE
| ID: mdl-34547686
ABSTRACT
In this work, nitrogen doped carbon dots (NCDs) were synthesized through one step hydrothermal reaction using citric acid and ethylenediamine as precursors. The prepared NCDs exhibit high quantum yield of 67.4%, good stability, excellent selectivity and sensitivity. It was found that the NCDs have potential as a fluorescence sensor for the detection of Hg2+. Under optimal conditions, good linearity between the change in NCDs fluorescence intensity and Hg2+ concentration was obtained in the range of 0.3 to 2.0 µM with a detection limit at 0.24 µM. The possible detection mechanism was static quenching of NCDs by Hg2+. The established method was successfully applied to the determination of Hg2+ in beverage samples. The results indicated that the NCDs-based sensor has potential for detection of Hg2+ in real beverage sample.
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Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Puntos Cuánticos
/
Mercurio
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Spectrochim Acta A Mol Biomol Spectrosc
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2022
Tipo del documento:
Article
País de afiliación:
China