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本文研究了在非离子表面活性剂Tween-20存在下,钛与5-溴水杨基萤光酮形成配合物的高灵敏度显色反应。配合物的摩尔吸光系数为2.23×10~5l·mol~(-1)·cm~(-1),线性范围为0—4.0μg/25ml.该体系选择性好,方法稳定、快速,已用于水相直接光度测定钢铁、铝合金和纯铝中的微量和痕量钛,结果满意。
In this paper, we studied the high sensitivity color reaction of titanium with 5-bromosalicylfluorone in the presence of non-ionic surfactant Tween-20. The molar absorptivity of the complex was 2.23 × 10 ~ 5l · mol -1 (-1) cm -1, and the linear range was 0-4.0μg / 25ml.The selectivity of the system was good, the method was stable and rapid, The results of direct photometric determination of trace and trace titanium in steel, aluminum alloy and pure aluminum were satisfactory.