摘要
本文研究了二溴苯基萤光酮-表面活性剂-铌三元体系的荧光特性,提出了以二溴苯基萤光酮-溴化十六烷基三甲基铵荧光光度法测定铌的新方法,该方法选择性和灵敏度以及重现性均很好,在λ_(ex)=420nm,λ_(em)=470 nm处铌含量在0～6μg/25ml范围内,线性关系良好、采用适当的掩蔽剂测定钢样中的微量铌,获得了满意的结果。
A new highly sonsitivc method has been developed for the fluorescence determination of niobium With 4, 5-dibromophellylfluorone and celynrimetylammonium bromide, the excitation and emission wavelengths are 420 and 470 nm, respcctivcly. The linear relationship is obeyed in the range of 0—6μg/25ml for Nb. The interference of foreign ions has also been studied, this method can bc used to determine Nb in thc steel samples with satisfactory resuns.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第7期819-821,共3页
Chinese Journal of Analytical Chemistry
关键词
铌
二溴苯基萤光酮
荧光光度法
Niobium
Dibromophenylfluorone
Fluorescence method.
