A peak current increment as an analytical signal can be
employed in an other version of HPSAM to allow the Sb(V)
concentration to be calculated with no systematic, constant or
proportional error. The plot of It1−t2 against the added analyte
concentration will have a constant point (−CH, 0) [37]. Thus, for
the determination of Sb(V) in presence of Sb(III), the peak current
increment as an analytical signal is used. The application of the
HPSAM in the It1−t2 − Cadded variant yields the concentration of