多壁碳纳米管石墨糊修饰电极阳极溶出伏安法测定铜  

Determination of Copper at MWNT-Carbon Paste Electrode by Anodic Stripping Voltammetry

作　　者：马曾燕[1] 李将渊[1] 向伟[1] 唐自龙[1] 

机构地区：[1]西华师范大学化学化工学院,四川南充637002

出　　处：《西华师范大学学报（自然科学版）》2007年第1期53-56,共4页Journal of China West Normal University(Natural Sciences)

基　　金：四川教育厅重点科研基金资助项目(2004A106)

摘　　要：制备了MWNT-石墨糊修饰电极,研究了以该电极为工作电极,用阳极溶出伏安法测定Cu2+的最佳实验条件.在0.6mol/L硫酸溶液中,于-0.6V(vs.SCE)处富集420s后进行阳极溶出伏安扫描.Cu2+浓度在1×10-6-2×10-5mo/L范围内与峰电流成线性关系;在5×10-7-4×10-6mo/L范围内与峰电流二次导数呈线性关系.检出限为1.25×10-7mol/L.The multi-wall carbon nanotubes（MWNT）-carbon paste electrode was prepared. The experiment parameters were optimized by anodic stripping vohammetry with the electrode. In a 0.6 moL/L sulfuric acid,Cu^2 ＋ was accumulated for 420s on the electrode surface at -0.6V（vs. SCE） , then determined by anodic stripping vohammetry. The peak current was linear with the Cu^2＋ concentration in range of 1 × 10^-6 - 2 × 10^-5 mo/L,and the second derivative peak current was directly proportional to the Cu^2＋ concentration in range of 5 ×10^-7 4 × 10^-6 mo/L . The detection limit was 1.25 × 10^-7 moL/L.

关 键 词：多壁碳纳米管 石墨糊修饰电极 阳极溶出伏安法 铜 

分 类 号：O657.1[理学—分析化学]