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A ring electrode of an RRDE setup is often used to detect a redox activespecie produced at the disk electrode. It is especially useful when some sideprocesses occur at the disk (e.g. passivation film growth) along with the mainelectrochemical reaction that produces the soluble redox-active specie.Unfortunately, the detected ring signal is delayed and smeared so that fastchanges of the disk processes intensities cannot be studied. The deconvolutionapproach is a mathematical data processing procedure that enablesreconstruction of the disk signal with hypothetically infinite accuracy.Although there are practical limitations arising mainly from impossibility ofexact measurement of the impulse response function and inevitable presence of anoise component in the ring signal used for the reconstruction. In this work aseries of calculations were performed in order to investigate the applicabilityand reliability of the deconvolution approach. Also a procedure to filter outspurious artifacts from the reconstructed disk signal was suggested and tested.

Applying the deconvolution approach in order to enhance RRDE time resolution: practical issues and limitations