聚吡咯/亚铁氰化钾/碳纳米管修饰电极检测亚硝酸根  

Investigation on determination of nitrite on a Ppy/HCF/MWNT modified electrode and its practical application

作　　者：宋诗稳[1] 于浩[1] 刘珍叶[1] 刘锐晓[1] 齐广才[1] 

机构地区：[1]延安大学化学与化工学院,延安716000

出　　处：《分析试验室》2010年第4期64-67,共4页Chinese Journal of Analysis Laboratory

基　　金：陕西省教育厅专项科研基金(07JK434);延安大学专项科研基金(YD-2007-7)项目资助

摘　　要：采用循环伏安法在滴涂碳纳米管的电极表面制备了聚吡咯/K4Fe(CN)6复合膜,研究了该电极的电化学性质及对NO2-的电催化还原。结果表明,固定于聚吡咯膜中的K4Fe(CN)6作为电子递质与碳纳米管和聚吡咯对NO2-电还原具有协同催化作用,安培法检测NO2-的线性范围为1.5×10-6～1.8×10-3mol/L,检出限为3.0×10-7mol/L,该法已用模拟水样中NO-的测定。A Fe(CN)64-doped polypyrrole film was fabricated onto the surface of the MWNT dropped composite ceramic electrode (CCE) via electrochemical polymerization.Its electrochemical behavior towards nitrite reduction was investigated using cyclic voltammetric and amperometric techniques.The experimental results showed that the resulting electrode exhibited high sensitivity towards the reduction of nitrite.Under the optimal conditions,the cathodic peak current showed a linear relationship with the concentration of ...

关 键 词：修饰电极 碳纳米管 聚吡咯 亚铁氰化钾 亚硝酸盐 

分 类 号：O657.1[理学—分析化学]