CTMAB对Ti(Ⅳ)-茜素红S显色反应增敏作用的研究

Study On How to Make Colour Reaction of Titanate (Ⅳ) With Alizarin Red S Sensitive With CTMAB

在溴化十六烷基三甲铵（简称CTMAB）存在下，Ti（Ⅳ）－茜素红S配合物的最大吸收波长为520nm，表观摩尔吸光系数为2．3×104L．moL(－1)cm(-1)。钛含量在0～70μg／25ml范围内符合比尔定律。该方法用于钢铁中钛的测定，结果满意。

This paper described a color reaction of titanate(Ⅳ) with alizarin red S in the presence of surfactant cetyltrimethylammonium bromide (CTMAB). The results showed that the maximum absorption wavelength was at 520nm, and the molar absorption coefficient was 2. 3×10(-4) L. Mol(-1) cm(-1). Beer's law was obeyed in the concentration range of 0-70μg/25ml.The method had been satisfactorily used for the rapid determination of trace Ti in the steel.