2-(2,3,5-triazolylazo)-5-acetamidophenol—Nafion modified glassy carbon electrode is prepared.In the B-R buffer solution (pH=5.0),a sensitive anodic peak at-0.50V(vs.SCE) is obtained.The peak current is proportional to copper concentration in the range of 2.0×10-8mol/L～5.0×10-6mo1/L,the detection limit is 5.0×10-9mol/L.This method has been successfully applied to the determination of trace copper in water.
