摘要
研究了在表面活性剂CTMAB存在下，试剂3，5－二溴－4－偶氮8－羟基喹啉苯基荧光酮与钨的显色反应，在0．6mol／LHCl介质中，钨与试剂形成1：2的红色三元胶束配合物，其最大吸收波长为538nm，表观摩尔吸光系数为1．38×105L·mol－1·cm-1，钨含量为0～10μg／25ml范围内符合比尔定律，拟定方法用于钢铁样品中微量钨的测定，结果满意．
In the presence of CTMAB, the colour reaction of W(VI ) with DBAHQPF has beenstudied . In the 0.6 mol. l-1 HCl medium. W(VI ) reacts with the reagent to form a red ternary micecle complex (1: 2). The complex has a maximum absorption at 538 um with a molar absorptivity of 1.38 × 105L. mol- 1cm- 1, Beer's law is obeyed for 0 ~ 10ug of W(VI ) in 25 ml solution. The methodhas been applied to determine Tungsten in steels with satisfaction .
出处
《三峡大学学报（人文社会科学版）》
1997年第3期82-84,共3页
Journal of China Three Gorges University(Humanities & Social Sciences)
基金
湖北省教委重点科研资助
关键词
3
5-二溴-4-偶素8-羟基喹啉苯基荧光酮
钨
分光光度法
2, 3, 7 - trihydroxy - 9 - [3, 5 - dibromo- 4 - (8 - hydrox - 5- quinolylazo ) ]phenyifluorone
Tungsten
Spectrophotometry
