Publications by authors named "Wei-Qing Cheng"
[Spectroscopic study on CdS nanoparticles prepared by microwave irradiation].
Guang Pu Xue Yu Guang Pu Fen Xi
June 2008
CdS nanoparticles capped by mercaptoacetic acid have been successfully synthesized by microwave method employing thioacetamide as sulfur source, which was proved to be a simple, rapid and specific mothod compared with traditional synthetical methods, such as precipitation, sol-gel, solvo-thermal method and so on. The concrete procedure synthesizing CdS nanoparticles was as follows: Cd(NO3)2 (40 mL, 5 mmol c L(-1)) was titrated with mercaptoacetic acid to pH 2.0, resulting in a turbid blue solution.
View Article and Find Full Text PDFDetermination of ciprofloxacin with functionalized cadmium sulfide nanoparticles as a fluorescence probe.
Spectrochim Acta A Mol Biomol Spectrosc
December 2008
Article Synopsis
- A novel assay for detecting ciprofloxacin at microgram levels was developed, utilizing enhanced fluorescence signals from interaction with functionalized nano-CdS nanoparticles.
- The functionalized nano-CdS were synthesized using thioacetamide and cadmium nitrate in an alkaline solution, showing a strong linear relationship between fluorescence intensity and ciprofloxacin concentration in specified ranges.
- The method allows for direct quantitative determination of ciprofloxacin in human serum with high sensitivity, achieving a limit of detection of 7.64 x 10(-6) mg mL(-1), and demonstrating reliable recovery rates and low variability in results.