Highly selective and sensitive detection of amaranth by using carbon dots-based nanosensor.
RSC Adv
; 9(45): 26315-26320, 2019 Aug 19.
Article
em En
| MEDLINE
| ID: mdl-35531017
ABSTRACT
In this work, a novel fluorescence nanosensor for selective and sensitive determination of amaranth was constructed using carbon dots (C-dots). Water soluble C-dots with strong fluorescence were obtained by a simple microwave-assisted method using urea and glycine as raw materials. It was found that amaranth can efficiently and sensitively quench the C-dots fluorescence by the inner filter effect (IFE) and non-radiative energy transfer (NRET) mechanisms. The fluorescence quenching efficiency (F 0/F) was strongly correlated with the concentration of amaranth in the 0.2-30 µM range. The detection limit (LOD) is 0.021 µM. There was no significant change in the fluorescence intensity of C-dots when other potentially interfering substances were present in the system. Our C-dots-based nanosensor was successfully utilized for the analysis of amaranth in drinks and showed rapid, sensitive and accurate responses. It indicates that the novel C-dots-based nanosensor has great potential in amaranth detection for real-life applications.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
RSC Adv
Ano de publicação:
2019
Tipo de documento:
Article