An inner-filter-effect based ratiometric fluorescent sensor for the detection of uranyl ions in real samples.
Anal Methods
; 14(5): 532-540, 2022 02 03.
Article
en En
| MEDLINE
| ID: mdl-35043798
ABSTRACT
In this work, a ratiometric fluorescence system was designed for the detection of trace UO22+ in water based on the inner filter effect (IFE) between gold nanoparticles (AuNPs) and gold nanoclusters (AuNCs). IFE-induced fluorescence quenching was achieved due to the enhanced complementary overlap between the absorption spectra of AuNPs and the emission spectrum of AuNCs after the addition of UO22+. Blue carbon dots (B-CDs) were added to serve as reference fluorophores to expand the color tonality and make human eye recognition easier. The ratiometric fluorescent sensor demonstrated a unique fluorescence color change from red to blue when different doses of UO22+ were added, with a detection limit of 8.4 nM. Furthermore, the ratiometric fluorescent sensor was effectively used for UO22+ determination in real-world water samples, with acceptable recoveries.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Nanopartículas del Metal
/
Oro
Tipo de estudio:
Diagnostic_studies
Límite:
Humans
Idioma:
En
Revista:
Anal Methods
Año:
2022
Tipo del documento:
Article
País de afiliación:
China