2-(2,3,5-三氮唑偶氮)-5-二甲氨基苯甲酸与铜络合物的电化学特性研究及应用  

Studies on Electrochemical Behavior of the Complex of 2-(2,3,5-Triazolylazo)-5-dimethylamino benzonic Acid and Copper and Its Application

作　　者：周享春[1] 蒋丽萍[2] 龙德武[2] 彭贞[3] 陆光汉[2] 

机构地区：[1]长江大学化学与环境工程学院,荆州434020 [2]华中师范大学化学学院,武汉430079 [3]巢湖学院化学系,巢湖238000

出　　处：《分析化学》2004年第11期1521-1524,共4页Chinese Journal of Analytical Chemistry

摘　　要：2 (2 ,3,5 三氮唑偶氮 ) 5 二甲氨基苯甲酸 (TZAMB)与铜 在 pH =2 .6的酸性介质中生成具有电活性的络合物 ,该络合物能在汞电极上产生灵敏的极谱波 ,本实验利用各种电化学方法研究了络合物的电化学性质 ,探讨了电极反应机理 ,在选定的条件下 ,单扫描极谱的电流与铜的浓度在 1.3× 10 -5～ 1.3× 10 -4g/L范围内呈线性关系 ,检出限为 6 .0× 10 -6g/L。2-(2,3,5-Triazolylazo) -5-dimethylamino-benzonic acid (TZAMB) can react with copper(II) in acid medium (pH=2.6) and form an electroactive complex, which shows a sensitive reduction wave by using single-sweep oscillopolarography on the mercury electrode. The electrochemical behavior and its mechanism have been studied in detail by using several electrochemical methods. Under the optimum conditions, the peak current and the concentration of copper (II) have a linear relationship in the range of 1.3x10(-5)similar to1.3x10(-4) g/L, and the detection limit is 6.0x10(-6) g/L.

关 键 词：2-(2 3 5-三氮唑偶氮)-5-二甲氨基苯甲酸 络合物 铜 电化学 原子吸收光谱法 电子转移数 

分 类 号：O657.1[理学—分析化学]