APPLICATION OF A TITANIUM-DIOXIDE ELECTRODE FOR MEASURING GLYCINE USING COPPER(II) ION

A titanium dioxide electrode using copper(II) ion was developed for me asuring glycine. The copper(II)-glycine complex interacted on the tita nium dioxide electrode surface. Use of the copper redox system enabled indirect measurement of glycine with good reproducibility without elu tion of the titanium ion. The calibration curve was determined and the effects of temperature, pH, the scanning rate, concomitant compounds, and the lifetime of the electrode were examined. Under optimal condit ions, the current response was linear in the concentration range of 0. 02 - 0.10 mM glycine.