Analytical Sciences

Abstract − Analytical Sciences, 16(4), 371 (2000).

UV/vis Spectrophotometry/Channel Flow Electrode to Determine Anodic Dissolution of Metal
Masayuki ITAGAKI, ˇ€Ū§umihiro HORI, and Kunihiro WATANABE
Department of Industrial Chemistry, Faculty of Science and Technology, Science University of Tokyo,Noda, Chiba 278-8510, Japan
UV/vis spectrophotometry/channel flow electrode was developed in order to determine the dissolution rate of metallic ions from the corroded metal electrode. In the present method, the relation between absorbance As and the flux of dissolved ions yis expressed by the following equation: As = ekyVm-2/3, where eis molar absorptivity, ka constant, and Vm the mean electrolyte flow rate. The present method was applied to the simultaneous determination of Fe(II) and Fe(III) dissolved from Fe during the active dissolution and the pitting initiation.