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详细研究了新显色剂三溴羟基苯基荧光酮在表面活性剂CTMAB存在下与钨形成三元胶束络合物的条件。在强酸性介质中形成W:DBHPF:CTMAB=1:3:9的三元胶束络合物,其最大吸收峰在 522nm波长处,摩尔吸光系数ε=1.22×10~5,钨含量在0～8μg/25ml 范围内符合比耳定律。用该方法测定了合金钢中的钨获得了较为满意的结果。
The conditions for the formation of ternary micellar complex with tungsten in the presence of surfactant CTMAB have been investigated in detail with the new tribromohydroxyphenylfluorone. The ternary micellar complex of W: DBHPF: CTMAB = 1: 3: 9 was formed in strongly acidic medium. The maximum absorption peak at 522 nm showed a molar absorptivity of ε = 1.22 × 10 ~ 5 and a tungsten content of 0 ~ 8μg / 25ml in line with the Beer’s law. The method has been used to determine the tungsten in the alloy steel has been more satisfactory results.