Metal-modified diamond electrode as an electrochemical detector for glucose

Nickel- and copper-modified diamond electrodes were fabricated in view of t heir application for carbohydrate detection. Both electrodes produced well- defined and reproducible voltammograms for I mM glucose in alkaline media. These electrodes exhibited excellent electrochemical stability with low bac kground current for at least one week in a flow injection analysis system, indicating good adherence of the metal clusters to diamond. These results i ndicate the promising use of nickel-and copper-modified diamond electrodes for the detection of carbohydrates and amino acids.