吸附伏安法测定高纯铝中痕量钛(英文)  

Determination of Trace Titanium in High Purity Aluminum by Adsorption Voltammetry

作　　者：高桂兰[1] 严规有[2] 

机构地区：[1]上海第二工业大学城市建设与环境工程学院,上海201209 [2]中南大学化学化工学院,长沙410083

出　　处：《上海第二工业大学学报》2009年第2期105-109,共5页Journal of Shanghai Polytechnic University

摘　　要：利用钛(Ⅳ)与钽试剂(BPHA)形成络合物,于玻璃碳电极(GCE)吸附伏安法测定钛。研究了测定条件和共存离子对测定的干扰,钛浓度在0.06至2ng.ml-1(-0.3V下富集2min)范围内与电流呈良好的线性关系,检出限可达0.0076ng.ml-1;方法选择性好,灵敏度高,操作简单;应用于高纯铝中痕量钛的测定,结果令人满意。Titanium （IV） reacts with N-benzoyl-N-phenylhydroxylamine （BPHA） to form a complex, which can be used to determine Titanium by adsorption voltammetry at a glassy carbon electrode（GCE）. The experimental conditions and the influence of foreign ions on the determination were investigated. The current-concentration curve was linear in the range of 0.06 to 2 ng.ml1 Ti at a deposition time of 2 rain at -0.3V. The detection limit was 0.0076 ng.ml^-1. The method has been proved to be o（ high sensitivity and to be easy to operate. The procedure has been applied to the determination of trace Titanium （IV） in high purity aluminum and the samples results were satisfactory.

关 键 词：钛 钽试剂 吸附伏安法 玻璃碳电极 

分 类 号：O657.14[理学—分析化学]