摘要
采用阳离子选择性透过膜对Ir/IrO_x-pH电极表面进行修饰,提高了电极抗阴离子氧化,还原性物质的干扰能力。利用SEM观察离子选择性透过膜的表面孔径分布;通过循环伏安法研究了氧化物电极在Fe(CN)_6^(3-)溶液中的电化学行为。实验表明,选择性透过膜对电极的E-pH线性、准确度、响应时间等无影响,显著改善了电极在含氧化/还原性物质中的使用性能。从而提高了电极的抗干扰能力和灵敏度。
Positive-ion selective fill was used to modify the Ir/IrOx-pH electrode, and it is found that the coated ion selective fill on the electrode improves the anti-interference ability toward oxidation/reduction） of negative ions. SEM was used to observe the pore size distribution on the surface of the coated selective film modified electrode. The electrochemical behavior of the fill-coated electrode in Fe（ CN）6^3- solution was studied by cyclic voltammetry, and the result showeds that the selective film did not affect the E-pH linear relationship, accuracy and response time of the electrode and improved the applied capability of the modified electrode in the solution containing oxidative/reductive nega- tive ions. So the anti-interference ability and the sensitivity of the modified electrode were improved.
出处
《分析试验室》
CAS
CSCD
北大核心
2009年第1期68-71,共4页
Chinese Journal of Analysis Laboratory
基金
陕西省教育厅自然科学基金(08JK387)项目资助
关键词
选择性膜
修饰
Ir/IrOx-pH电极
抗干扰
增敏
Selective film
Modification
Ir/IrOx-pH electrode
Anti-interference
Enhanced sensitivity
