Copper(II)–Selective potentiometric sensor based on Bis(2-chlorobenzaldehyde)phenyl disulphide diimine in PVC Matrix

Abstract- an attempt has been made to develop a highly selective copper ion selectiveelectrode based on a pvc based sensor using bis(2-chlorobenzaldehyde)phenyldisulphide diimine as ionophore with 61% npoe in presence of 33.5% pvc,0.5%dithio ligand and 5% stpb as an anion excluder. the sensor exhibits a near nernestianpotential response of 29±1mv/decade. over a wide concentration range of (5.0×10-6 to5.0×10-2 mol/l) with a detection limit of 3.1×10-6 m between ph=4-7 with a fastresponse time of 5s. the selectivity coefficient values, as determined by matchedpotential method indicate excellent selectivity for cu2+ over a large number of ions. theproposed sensor exhibit an adequate shelf time (3 months) with good reproducibility.the quantification of cu2+ in waste water of copper wire manufacturing factory wassuccessfully achieved using the proposed sensor.