Zero-current ion-flux has a great influence on the characteristics of the ion-selective electrodes.In this
work the improvement of analytical performance of all-solid-state Pb2þ-selective membrane electro-
des was demonstrated by adjusting the transmembrane ion flux.The study is focused on the
relationship between the conditioning solution and the linear working range of the obtained electrodes
for differentsamplematrixes.Resultsshowthattheelectrodewithappropriateconditioningkeeps
good reproducibilitywithinlinearworkingrange.Theutilityoftheelectrodehasbeentestedby
successfullydeterminingPb2þ concentrationinrealwatersamples.