SELECTIVE LIQUID AND (VINYL-CHLORIDE) PENTOXYVERINE MEMBRANE ELECTRODES - THEIR PREPARATION AND USE FOR THE POTENTIOMETRIC DETERMINATION OFPENTOXYVERINE CITRATE
H. Hopkala et al., SELECTIVE LIQUID AND (VINYL-CHLORIDE) PENTOXYVERINE MEMBRANE ELECTRODES - THEIR PREPARATION AND USE FOR THE POTENTIOMETRIC DETERMINATION OFPENTOXYVERINE CITRATE, Analytical letters, 27(12), 1994, pp. 2223-2238
The use of liquid and poly(vinyl-chloride) membrane electrodes which a
re sensitive and reasonably selective for pentoxyverine determination
is described here. The electrodes are based on the use of pentoxyverin
e-picrate, pentoxyverine-picrolonate and pentoxyverine-tetraphenylbora
te ion association complexes as electroactive materials in nitrobenzen
e or in poly(vinyl chloride) matrix. These electrodes show near Nernst
ian response values in different concentration ranges, depending on th
e nature of the used counter-ions, at 3.3-7.8 pH range. Potentiometric
determination of pentoxyverine citrate with use of these electrodes g
ives good results which later on are compared with those obtained by n
on-aqueous titration.