关键词：
镍(Ⅱ);诺氟沙星;荧光淬灭;模拟废水样;芹菜
摘 要：
在HAc-NaAc缓冲溶液中,镍(Ⅱ)对诺氟沙星的荧光强度有明显的淬灭作用,据此建立了一种测定镍(Ⅱ)含量的荧光光谱法。在优化实验条件下,其荧光淬灭强度与镍(Ⅱ)的浓度在5.00×10-7～1.00×10-5mol/L范围内呈良好的线性关系,检出限为2.1×10-7mol/L,相对标准偏差为1.5%(c=4.00×10-6mol/L,n=11)。该方法已成功应用于模拟废水与芹菜样中镍(Ⅱ)含量测定,回收率在99.60%～108.8%之间。
译 名：
Fluorescence Quenching Method for Determination of Trace Nickelin in Simulated Waste Water and Celery Samples
作 者：
XIONG Hai-tao;College of Chemistry,Shaanxi University of Techonology;
关键词：
nickel(Ⅱ);;norfloxacin;;fluorescence quenching;;simulated wastewater;;celery
摘 要：
In acetic acid/sodium acetate buffer solution,based on the obvious quenching effect of nickel(Ⅱ) on the fluorescent intensity of norfloxacin,a fluorescent spectroscopic method for the determination of trace nickel was developed.Under the optimal experimental conditions,the fluorescent quenching strength responded linearly with nickel(Ⅱ) concentration in 5.00 × 10-7 to 1.00 × 10-5 mol/L with a detection limit of 2.1 × 10-7 mol/L.The relative standard deviation was 1.5%( c = 4.00 × 10-6 mol/L,n = 11).This method has been successfully applied to the determination of nickel(Ⅱ) in simulated waste water and celery samples,with recovery between 99.60% and 108.8%.
