摘要
在表面活性剂CTMAB存在下，研究了新试剂3，5-二溴-4-二甲氨基过溴化物苯基荧光酮（DBDMBPF）与钨的显色反应．在0．4mol／LHCl介质中，钨与试剂形成1：2的红色胶束配合物，最大吸收波长λmax为538nm，表观摩尔吸光系数ε为1．10×10~5，钨浓度在0～10μg／25mL范围内符从比耳定律．拟定方法直接用于合金钢样品中微量钨的测定．结果令人满意．
In the presence of CTMAB. the colour reaction of Tungsten(Ⅵ) with newreagent[3. 5-dibromo-4-dimethylamino prebromide]phenlylfluorone (DBDMBPF) has beenstudied. In the 0. 4 mol/L HCl medim. Tungsten reacts with DBDMBPF to form a 1:2 redmicelle complex. the maximum absorption is at 532nm. The molor absorptivity is found tobe 1.10×105L. mol1.cm1.Beer's law obeyed in the range of 0～10ug/25 ml. The methodhas been used to determine Tungsten in steels with satisfactory results.
出处
《三峡大学学报（人文社会科学版）》
1997年第1期69-72,共4页
Journal of China Three Gorges University(Humanities & Social Sciences)
基金
湖北省教委重点科学研究
