期刊论文

Li, Guirong

英文

Analytical Letters

0003-2719

2013

46

3

473-487

10.1080/00032719.2012.723228

Received 25 June 2012; accepted 16 August 2012. The authors gratefully acknowledge the support of the Science Foundation of Hengyang, China (No. 2005KS01-018). Address correspondence to Guirong Li, College of Public Health, University of South China, Hengyang 421001, P. R. China. E-mail: liguirong525@126.com

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A novel method for the determination of trace gatifloxacin was established by resonance fluorescence techniques. It was based on the fact that oxidation of rhodamin 6G by hydrogen peroxide and Cu2+ was inhibited by gatifloxacin in Tris-HCl buffer medium and in presence of cetyl trimethyl ammonium bromide. The enhanced intensity (ΔF) of resonance fluorescence at 540 nm was proportional to the concentration of gatifloxacin in the range of 9.8 × 10-3 - 1.75 μg mL-1. The limit of detection was 2.9 ng mL-1 and the average recovery was 101.8% (n =...