【摘要】 <正> (口底)唑是一种灵敏的显色剂,为此本文对钛-(口底)唑-阳离子表面活性剂的三元体系进行了研究,结果表明:钛、(口底)唑和所研究的几种阳离子表面活性剂均可形成三元胶束络合物,而其中以CTMAB为最佳,其摩尔吸光系数可达1.1×10~5。所拟定的方法用于测定水中痕量钛,结果较满意。更多还原

【Abstract】 In a weak-acid solution, titanium was found to be able to react with stilbazo and cetyl-trimethyl ammonium bromide(CTMAB), forming a red ternary complex. The wavelength of maximum absorbance for the complex was 520nm.The molar ratios of the components in the complex are estimated to be Ti ( Ⅳ ): stilbazo :CTMAB = 1:3 : 6. The present method can be applied to the determination of trace Ti in water. A 5cm cell was used in the spectrophotometric determination, the molar absorptivity was 1.1×105 at 520 nm. The calibration curve well follows Beer’s law in the range from 0 to 0.75 μg of Ti (Ⅳ) in 25 ml solution under the above condition. It was found that the method proposed in this work had high sensitivity and gave gratifying result in the determination of Ti (Ⅳ) in water.更多还原