The influence of spontaneous charging/discharging of conducting polymer ion-to-electron transducer on potentiometric responses of all-solid-state calcium-selective electrodes

The sensor can be optimized to obtain linear responses within an activity range from 0.1 to 10−9 M CaCl2 or to achieve unbiased selectivity coefficients. On the other hand, the logKCa,Jpot values obtained were equal to −9.3 for K+, −7.6 for Li+ and −9.6 for Mg2+, respectively, more favorable values than those reported for tailored internal solution electrodes.