SONOELECTROCHEMISTRY - THE EFFECT OF ULTR ASOUND ON VOLTAMMETRIC MEASUREMENTS AT A SOLID ELECTRODE

Experimental arrangement suitable for studies of the influence of ultr asound on electrochemical processes is described. Its application is i llustrated with an example of studies of influence of ultrasound on vo ltammetric curves of reduction of methylviologen in acetonitrile. The voltammograms recorded at a stacionary electrode present a sigmoidal s hape of average current with strong current oscillations whose relativ e amplitude is larger at a small electrode (diameter 0.2 mm(2)) than a t a larger one (area 16 mm(2)). The shape of the curves including the individual pulses is explained elsewhere.