间氟苯基荧光酮—溴化十六烷基吡啶荧光熄灭法测定微量钼的研究  

Study on the determination of micro molybdenum by fluorescence quenc hing method with m-fluorophe nylflu orone and cetyl pyridine bromide

作　　者：马红燕[1] 齐广才[1] 

机构地区：[1]延安大学化学与化工系,陕西延安716000

出　　处：《冶金分析》2001年第4期15-17,共3页Metallurgical Analysis

基　　金：陕西省教委专项科研基金资助课题 ( 99JK1 2 4)

摘　　要：研究了间氟苯基荧光酮 ( m FPF)与钼 的反应条件。在 0 0 2～ 0 1 0mol/L盐酸溶液中 ,于表面活性剂溴化十六烷基吡啶 (CPB)存在下 ,Mo 与m FPF生成络合物使m FPF荧光熄灭 ,建立了Mo m FPF CPB体系测定微量Mo 的荧光分析新方法。荧光熄灭程度与Mo 的含量在 0～ 4 0 μg/ 2 5mL范围内呈线性关系。应用本法于钢样及水样中微量钼的测定 ,结果满意。The fluorescence properti es and reaction conditions of Mo*& -m-FPF-CPB fluorescent system are described.A method was developed f or the determination of micro Mo*& based on the fluorescence quenchi ng effect of m-FPF-CPB.The results indicate that in the medium of 0.0 2-0.10mol.L -1 HCl, the Mo*&-m-FP F-CPB fluorescent complex has maximu m excitation at 365nm and maximum emission at 534nm.The fluorescence intensity is proportional to the c oncentration of Mo*& in the range of 0-4.0μg/25mL.This method is app licable for the determination of m icro molybdenum in steel and water sampl es with satisfactory results.

关 键 词：钼 间氟苯基荧光酮 溴化十六烷基吡啶 荧光熄灭 测定 光度法 

分 类 号：O657.3[理学—分析化学] TG115.33[理学—化学]