Cyclic Voltammetry of Ion Transfer for Phenylpropanolamine Hydrochloride at Water Nitrobenzene Interface

The transfer on phenylpropanolamine ion, PPAH+, has been studied at the Interface between Two Immis- cible Solutions (ITIES). The polarizable potential range was determined by cyclic voltammetry at the in- terface between an aqueous solution of lithium chloride (LiCl) and a nitrobenzene (NB) solution of elec- trolyte tetrabutylammonium tetraphenylborate (TBATPB). The half-wave potential of ion transfer for phenylpropanolamine accross the water|NB interface was found 465.3 mV. The peak separation, the diffu- sion coefficient, and the standard ion transfer potential of PPAH+ were observed to be 59.1 mV, 1.7 ? 10-6 cm2/s, and 104.6 mV, respectively. The temperature of experiment was kept constantly at 25 ± 1 oC using water flow thermostate. Keywords: Phenylpropanolamine; Ion transfer; Diffusion coefficient; Liquid|liquid interface.