Application of polyaniline nanofibers for the construction of nitrate all-solid-state ion-selective electrodes

Abstract The application of polyaniline nanofibers doped with chloride and nitrate ions (PANINFs-Cl PANINFs-NO 3 ) in potentiometry was described. Both kinds were used as an ion-to-electron transducer ion-selective electrodes solid contact (SCISEs). Extensive research on the properties themselves (SEM, UV–Vis spectroscopy, FTIR) constructed (potentiometric methods, electrochemical impedance spectroscopy) has been carried out. Basic analytical parameters containing various contents membrane intermediate layer determined. It found that PANI resulted improvement electrode performance (among others, better stability reversibility potential). obtained sensors characterized by a high slope calibration curve, wide measuring range fast response time. Moreover, they insensitive to change redox potential, well light presence oxygen solution, what is important from practical point view. They also successfully for determination real environmental samples.