去甲肾上腺素在多壁碳纳米管修饰玻碳电极上的电化学行为

The electrochem ical behavior of norep inephrine(NE) on mu ltip ly wall carbon nanotube mod ified electrode was investiga-ted by cyc lic voltamm etry(CV) and square wave voltamm etry(SWV).Resu lts show that carbon nanotube mod ified electrode in 0.1 mol/L H3PO4solutions has an obvious electrocatalytic effect on the oxidation and deoxid ization ofNE.The oxidation current ofNE is linear w ith it s concentration in the range of 1.0×10-6～1.5×10-5mol/L and 2.0×10-5～1.0×10-4mol/L w ith correlation coeffic ients of 0.978 and 0.9998,respectwely.The detection lim it is 6.0×10-7mol/L.W h ile the mod ified electrode was app lied to the determ ination of in jection samp le,the resu lt is in good agreem entw ith the stated value.