Design of a New Sm(III) Selective Electrode Based on Chemometrics Studies and Experimental Evaluation

The potentiometric method using ion selective electrode (ISE) is a very convenient method for the determination of various ions. In this study, we designed a new selectrophore (PAPC) for Samarium(III) ion based on the predictive QSPR model. The potential response of the ion selective electrode based on the selectophore was determined, experimentally. The slope of calibration plots was ۱۹.۵۸ ± ۰.۲ mV per decade of the activity of Sm۳+ ions. The electrode has exhibited Nernstian behavior over wide concentration ranges. Also, this sensor has shown an appreciable selectivity for samarium ions in the presence of lanthanide ions.