GC/AQ-Os(bpy)_3^(2+)/PVP复合修饰电极对NO_2^-的检测

AQ-Os(bpy)_3^(2+)/PVP Composite Modified Electrode for Nitrite Detection

制备由阳离子交换聚合物AQ和阴离子聚合物PVP组成的复合修饰电极.考察该电极在PH=1的H2SO4底液中亚硝酸根的电化学行为.结果显示:该电极对亚硝酸根具有明显电催化作用.能够很好地用于微量亚硝酸根检测.

The composite modified electrodes composed of two kind of oppositely charged ionic exchange polymerAQ(Cationic exchange polymer) and PVP(Anionic exchange polymer) have been prepared.The electrochemical behavior of electrode was characterized in medium of H2SO4 solution.Results shows the electrode obviousty electrocatalytic to the nitrite insolution.This kind of composite modified electrodes may be a good candidate for NO-2sensor.