ABSTRACT
The voltammetric measuring technique where the component to be reduced or oxidized reaches the electrode surface by convection is termed hydrodynamic voltammetry. The convection can be the result of the rotation or vibration of the working electrode, but the stirring or the streaming of the sample solution is also used frequently. Hydrodynamic voltammetry is a well-applicable technique for following different physical or chemical reactions. In certain cases the solution to be analyzed is a moving one, while in other cases the sample solution is streamed for the sake of continuous analysis. The advantages of voltammetric measurements under convective diffusion conditions are: Under convective diffusion conditions the current intensities — which are the quantity used for the concentration measurement — are higher, than under diffusion conditions. This chapter presents an experiment on use of a very simple dissolution-rate studying system that provides some experience with flow-through analytical systems.
