Cu(Ⅱ)-NCP体系配位吸附波研究及应用  

Polargraphic Adsorption Wave of Copper-Neocuproine Complex and Its Aplication

作　　者：周长利[1] 罗川南[2] 李慧芝[1] 徐俊[1] 

机构地区：[1]济南大学应化系,山东济南250022 [2]中国科学院兰州化物所,甘肃兰州730000

出　　处：《化学世界》2003年第1期11-13,共3页Chemical World

摘　　要：在 0 .1 0 mol/L HAc- Na Ac(p H4.2 6 )介质中 ,Cu( ) - NCP配合物在 2 .5次微分极谱图上产生良好的吸附还原波。其峰电位为 - 0 .2 8V,峰电流与 Cu( )浓度在 5 .6× 1 0 -8～ 2 .4× 1 0 -6mol/L范围内呈良好的线性关系 ,检测限为 1 .2× 1 0 -8mol/L。应用该法测定了食品和自来水中的铜 ,获得了满意的结果。研究了配合物的组成 ,极谱波的性质。In a buffer solution of 0.1 mol/L HAc-NaAc(pH4.26), the complex of copper-neocuproine (NCP) is adsorbed on the surface of mercury electrode and produces a reduction peak at -0.28 V (vs. SCE). The detection limit and the linear range of the concentration of Cu(Ⅱ) are 1.2×10 -8mol/L and 5.6×10 -8～2.4×10 -6 mol/L Cu(Ⅱ), respectively. The method has been applied to the determination of trace Cu(Ⅱ) in food and water samples with satisfactory results. The mechanism of the electrode process has also been studied.

关 键 词：Cu(Ⅱ)-NCP体系 配位吸附波 应用 铜 食品 水 分析 极谱法 

分 类 号：O614.121[理学—无机化学] O657.14[理学—化学]