There are cases in which the addition products are more
easily oxidized than the parent molecules. Therefore, the
products are in the oxidized state at the applied electrolysis
potential [3,7]. In principal at least, voltammetric determination
of the oxidized product is facile at the same electrode
if the redox potential of the product is well-separated from
that of the parent molecules. Or the oxidized product could
be determined separately by a second electrode. The series
dual-electrode serving as a generator–detector pair has been
used for the analysis of electrochemically reversible neurotransmitters
[9].