联机—速差动力学分析法同时测定铁钛的研究

On Computerized Kinetic Analytical Method for the Simultaneous Determination of Trace amount of Iron(Ⅲ) and Titanium (Ⅳ)

利用５－溴水杨基荧光酮，ＣＴＭＡＢ与Ｆｅ（Ⅲ），Ｔｉ（Ⅳ）形成的三元配合物显色体系，采用联机检测技术，结合流动注射方法，对双组分金属离子进行了速差动力学同时测定的研究，并且测定了电铸液中Ｆｅ（Ⅲ）的含量。结果表明，该方法不仅排除了Ｔｉ（Ⅳ）的干扰，而且测定了Ｔｉ（Ⅳ）的含量。方法的回收率在９６％～１０６％之间。样品处理简便，电铸液中其它组分基本不干扰测定。

The computerized kinetic analytical method has been developed for the simultaneous determination of trace iron (Ⅲ) and titanium (Ⅳ) in electrocasting solution ,by detection of the coloration system of 5 bromo salicylfluorone with CTMAB and Fe3+ or Ti(Ⅳ). The method can detect Fe3+,Ti (Ⅳ) without the interference of Ti (Ⅳ). The recovery is 96￣106%,and the sample processing procedure is simple . Other components in the electrocasting solution don't interfere the determination.