Green one-pot synthesis of nitrogen and sulfur co-doped carbon quantum dots as new fluorescent nanosensors for determination of salinomycin and maduramicin in food samples
| Autor: | Galal Magdy, Ahmed M. Abdel-Megied, Fathalla Belal, Ahmed F. Abdel Hakiem |
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| Rok vydání: | 2020 |
| Předmět: |
Nitrogen
chemistry.chemical_element Chemistry Techniques Synthetic 01 natural sciences Analytical Chemistry chemistry.chemical_compound Lactones 0404 agricultural biotechnology Nanosensor Quantum Dots Maduramicin Derivatization Salinomycin Fluorescent Dyes Pyrans Detection limit 010401 analytical chemistry Green Chemistry Technology 04 agricultural and veterinary sciences General Medicine 040401 food science Fluorescence Sulfur Carbon 0104 chemical sciences chemistry Citric acid Food Analysis Food Science Nuclear chemistry |
| Zdroj: | Food chemistry. 343 |
| ISSN: | 1873-7072 |
| Popis: | A simple green hydrothermal method was proposed for synthesis of highly fluorescent nitrogen and sulfur co-doped carbon quantum dots (N,S-CQDs) using citric acid and thiosemicarbazide. The produced N,S-CQDs were subjected to extensive spectroscopic characterization and applied as fluorescent nanosensors for the sensitive spectrofluorimetric determination of salinomycin and maduramicin directly without prior derivatization for the first time. The obtained N,S-CQDs showed strong emission band at 430 nm after excitation at 360 nm. The native fluorescence of N,S-CQDs was found to be quenched by the addition of increased concentrations of each drug. Method validation revealed a wide linear relationship between the fluorescence quenching of N,S-CQDs and the concentration of each drug in the range of 10.0–300.0 μM with detection limits of 2.07 μM and 1.34 μM for salinomycin and maduramicin, respectively. The developed method has been efficiently applied for estimation of analytes in six raw matrices with high recoveries. |
| Databáze: | OpenAIRE |
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