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.