3.2.1. Determination of phenothiazine derivatives in
medicinal forms
The developed method of FIA high-speed titration with
perchloric acid in non-aqueous medium was employed for analysis of mass-produced medicinal preparations. The results
obtained were compared with the results of determinations
carried out by official batch titration method. The
results of the determination are given in Table 3. It can be
seen that the contents obtained are comparable. The determination
time is decreased to almost one half when FIA titrations
are used and theworking efficiency is thus much higher.
Moreover, using well-sealed FIA apparatus, there are none of
the problems associated with corrosive vapours, which are a
characteristic for the work with acetic acid in classical batch
arrangement.