ZHAO Yan,SUN Xue-hua.Rapid Detection of Sulfasalazine Using a Nitrogen-doped Carbon Quantum Dots[J].Journal of Instrumental Analysis,2024,43(07):1052-1057.
ZHAO Yan,SUN Xue-hua.Rapid Detection of Sulfasalazine Using a Nitrogen-doped Carbon Quantum Dots[J].Journal of Instrumental Analysis,2024,43(07):1052-1057. DOI: 10.12452/j.fxcsxb.24032002.
Rapid Detection of Sulfasalazine Using a Nitrogen-doped Carbon Quantum Dots
The nitrogen-doped carbon quantum dots(N-CDs) with high fluorescence properties and fluorescence quantum yield of 89.38% were prepared by microwave one-step synthesis. A new method for the rapid and accurate determination of sulfasalazine(SSZ) was established by fluorescence quenching. The carbon quantum dots were characterized by transmission electron microscopy(TEM) and Fourier infrared spectroscopy(FT-IR). The results showed that the average particle size of N-CDs was 2.91 nm,mainly composed of C,O and N elements,and a large number of carbonyl,hydroxyl and carboxyl groups existed on the surface of N-CDs. Under the optimal conditions,the concentration of sulfasalazine was linear in the range of 0.1-2 μmol/L and 3-200 μmol/L,and the detection limit was 0.2 μmol/L. The content of sulfasalazine in sulfasalazine enteric-coated tablets was determined by this method,and the recovery was 97.3%-102%.
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