高灵敏铜离子选择性电极研制及在湿法冶金废水中铜测定的应用  

Fabrication of high-sensitive copper(Ⅱ) ion selective electrode and its application to the determination of copper ion in hydrometallurgical waste water

作　　者：巩春侠[1] 魏小平[1] 崔普选[1] 李建平[1] 

机构地区：[1]桂林理工大学材料与化学工程系,广西桂林541004

出　　处：《冶金分析》2009年第8期7-10,共4页Metallurgical Analysis

基　　金：广西教育厅科研基金(桂教科200508135);广西研究生教育创新人才联合培养基地项目;广西高校人才小高地建设"环境工程"创新团队计划(桂教人[2007]71号)资助项目

摘　　要：利用水杨醛和邻氨基苯酚合成了水杨醛缩邻氨基苯酚席夫碱(以下简称SA),并将其作为中性载体与碳粉混合,以液体石蜡为粘合剂,制备了一种高灵敏,易更新石蜡修饰的铜离子选择性电极。电极对于浓度在1.0×10-5～1.0×10-2mol/L范围内的Cu2+具有能斯特响应,检测限为5.0×10-6mol/L;电极的响应时间均小于60s;电极稳定性好,可在一个星期内连续使用。该离子选择性电极已用于湿法冶金废水中Cu2+的分析,两个样品测定结果的相对标准偏差(n=8)分别为0.8%和1.4%,加标回收率分别为101%和100%。A high-sensitivity and easy-refreshing copper ion selective electrode modified with paraffin was fabricated by mixing solicylidene-o-aminophenol（SA） with carbon powder using paraffin oil as binder, The SA was synthesized with solicylidene and aminophenol. The electrode exhibited a Nernstian response to Cu2＋ over a range of 1.0×10^-5 -1.0×10^-2 mol/L with a detection limit of 5.0 ×10^-6 mol/L. The response time of the electrode was less than 60 s. The electrode could be used continually within a week. The electrode also exhibited high selectivity to Cu（Ⅱ） in the presence of a wide variety of metal ions. It has been used to determine copper ion in waste water samples from hydrometallurgy of copper. The relative standard deviation（n=8）for the determination results of were 101% and 100%,respectivelyo two samples were 0.8 % and 1.4 % and the recovery

关 键 词：铜(Ⅱ) 离子选择性电极 水杨醛缩邻氨基苯酚 湿法冶金 

分 类 号：O657.15[理学—分析化学]