COLLECTION OF NIOBIUM PHENYLFLUORONE COMPLEX ON A MEMBRANE-FILTER FOR THE DETERMINATION OF TRACES OF NIOBIUM BY SOLID-PHASE SPECTROPHOTOMETRY

被引:6
|
作者
NUKATSUKA, I
MIURA, T
OHZEKI, K
ISHIDA, R
机构
[1] Department of Chemistry, Faculty of Science, Hirosaki University, Hirosaki
关键词
SPECTROPHOTOMETRY; EXTRACTION; MEMBRANE FILTRATION; NIOBIUM;
D O I
10.1016/S0003-2670(00)84671-1
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A simple and sensitive spectrophotometric method for the determination of traces of niobium(V) is based on the colour reaction between niobium(V) and phenylfluorone (Pfn) in the presence of Zephiramine micelles in dilute hydrochloric acid and extraction of the complex on a membrane filter. The absorbance of the Nb(V)-Pfn complex is measured directly on the filter. The detection limit is 4 ng for 30 ml of sample solution.
引用
收藏
页码:529 / 533
页数:5
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