Аннотация:Basic electroanalytical parameters have been determined for an ion-selective electrode (ISE) with a
supramolecular polymer membrane containing polyvinyl chloride (PVC), a plasticizer onitrophenyloctyl
ether, ionophor tetradecyammonium teraphertehtetate (PTTDF) and a lipophilic dopant
tetraphenylborate tetradecylmonium. The electrode function of these ISEs was shown to be linear in the
concentration range (TcO4)- 2⋅10-7÷ 10-2 mol / l; the slopes of the electrode function at 20 ° C are 57.5 ± 1.5 mV / p TcO4 - . The potentiometric coefficients of selectivity to various anions are determined. It was established that a change in the pH of the analyzed solution from 0.5 to 13 does not affect the potential.
The possibility of using the ISE to determine Tc in the products of reprocessing spent nuclear fuel (SNF) is shown.
