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.
出处
《分析试验室》
CAS
CSCD
北大核心
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
关键词
荧光熄灭法
铁
DBPF
Fluorescence quenching method
Iron determination
4,5-dibromophenyl fluorone
CTMAB
