4,5-二溴苯基荧光酮-溴化十六烷基三甲铵荧光熄灭法测定微量铁  

Determination of Trace Iron by Fluorescence Quenching Method with 4,5-DibromophenyL Fiuorone in the Presence of CTMAB

作　　者：郑怀礼[1] 胡守坤[2] 

机构地区：[1]重庆建工学院基础科学系,重庆630045 [2]四川大学化学系,成都610064

出　　处：《分析试验室》1992年第2期22-24,共3页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金

摘　　要：本文利用DBPF为荧光试剂,在大量CTMAB存在下,用荧光熄灭法测定微量铁,λ_(ex)为362nm,λ_(em)560nm。线性范围为0.002～0.12μg/mL。三元络合物中,Fe:DBPF=1:3。A new system for determining Fe has been developed with 4,5-dibromophenyl fluorone and CTMAB. The rectilinear range is 0. 05～3. 0μg/25mL. The detection limit is 2ng/mL. The molar ratio of Fe(Ⅲ) to DBPF is 1 : 3. The excitation and emission wavelengths are 362 and 560nm respectively. The method has been applied to the determination of iron in the cobalt and nickel metaks.

关 键 词：荧光熄灭法 铁 DBPF 

分 类 号：O614.811[理学—无机化学]