铁(Ⅲ)-依诺沙星-SDS三元体系的荧光特性及应用  

Fluorescence characteristics and analytical application of iron(Ⅲ)-enoxacin-SDS ternary system

作　　者：张社争[1] 马红燕[1] 刘玉梅[1] 郑佩[1] 雷鹏[1] 

机构地区：[1]延安大学化学与化工学院,陕西延安716000

出　　处：《化学研究与应用》2005年第6期813-815,共3页Chemical Research and Application

基　　金：陕西省教育厅科研基金资助项目(04JK305)

摘　　要：A highly sensitive fluorescence quenching method for the determination of iron（Ⅲ）based on the system of iron（Ⅲ）-enoxacin-SDS has been developed.In NaAc-HAc medium,iron（Ⅲ）reacted with enoxacin and SDS to form a non-fluorescent mixed complex and quenches the fluorescence intensity of enoxacin.The experimental conditions that influence the fluorescent intensity were investigated and optimized.Under the optimum conditions the detection limit is 8.0×10-9mol/L.The linear range is 2.0×10-8-8.0×10-6mol/L.This method has been applied to the determination of trace iron（Ⅲ）in water and food samples with satisfactory results.A highly sensitive fluorescence quenching method for the determination of iron （ Ⅲ ） based on the system of iron （ Ⅲ ） - enoxacin -SDS has been developed. In NaAc -HAc medium ,iron（Ⅲ ）reacted with enoxacin and SDS to form a non -fluorescent mixed complex and quenches the fluorescence intensity of enoxacin. The experimental conditions that influence the fluorescent intensity were investigated and optimized. Under the optimum conditions the detection limit is 8. 0 × 10^-9mol/L. The linear range is 2.0 × 10^-8- 8. 0 × 10^-6mol/L. This method has been applied to the determination of trace iron（ Ⅲ ） in water and food samples with satisfactory results.

关 键 词：铁(Ⅲ) 依诺沙星 十二烷基硫酸钠 荧光光度法 

分 类 号：O657.3[理学—分析化学]