However, suppression of current signal was observed by
the proposed LSV and FIA method when AA was coexisted in solution. The amount of addition product P will
decrease when the homogeneous reduction of the oxidized
o-DQ with AA occurred [14]. By using stronger nucleophiles,
the homogeneous reaction of o-DQ and AA would
be inhibited [7]. Although there is AA interference in this
study, the working approach implies a promising applicability
for the determination of the pharmaceutical medicines
and bio-interests.