THE IMPINGING JET FLOW METHOD IN INTERFACIAL ELECTROCHEMISTRY - AN APPLICATION TO BEAD-TYPE ELECTRODES

The details of an impinging jet flow system to be used for interfacial electrochemical studies at smooth bead-type electrodes are described. The 0.7-ml min(-1) electrolyte flow was propelled by hydrostatic pres sure and accurately controlled by a computer-controlled rotating valve . Carbon monoxide dissolved in 1 mol dm(-3) sulfuric acid was dosed on to a polycrystalline platinum surface in a carrier flow of pure electr olyte. The dosing performance of the flow cell was evaluated by electr ooxidation of bulk and adsorbed CO, and the effect of dosing potential on the stripping voltammogram and on the charge displacement behaviou r was investigated and discussed. (C) 1998 Elsevier Science S.A. All r ights reserved.