A ratiometric fluorescence sensor for tetracycline detection based on two fluorophores derived from Partridge tea.
Mikrochim Acta
; 190(2): 66, 2023 01 24.
Article
in En
| MEDLINE
| ID: mdl-36692590
ABSTRACT
Blue fluorescent carbon dots (PCDs) were prepared by hydrothermal method with Partridge tea. The ethanol extract of Partridge tea (PEE) was found to emit red fluorescence. Thus, a novel ratiometric sensor was constructed by simply mixing the two fluorophores derived from Partridge tea. The presence of tetracycline (TET) at lower concentrations enhanced the emission peak at 508 nm of PCDs and had a negligible effect on the emission peak at 680 nm of PEE. TET at higher concentrations led to quenching both the fluorescence of PCDs and PEE via inner filter effect and fluorescence resonance energy transfer, separately. Good linearities for the detection of TET were obtained in the ranges 0.67 to 15.00 µM and 33.33 to 266.67 µM, with limit of detection of 0.095 µM. The sensor was successfully applied to detect TET in lake water and milk samples with good recoveries ranging from 93.27 ± 4.04% to 107.30 ± 6.16%. This study provided a simple, selective, sensitive, rapid, and environmentally friendly method of monitoring TET residues in the environment and food.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Quantum Dots
Type of study:
Diagnostic_studies
Language:
En
Journal:
Mikrochim Acta
Year:
2023
Type:
Article
Affiliation country:
China