Electrod Cu2+-selectiv cu contact solid [Articol]

Abstract

A cationic sensor with solid graphite contact has been prepared, based on N1, N5-bis (salicylidene)-S-methyl-isothiocarbohydrazone as sensing material incorporated in to the plasticized PVC-membrane. The sensor exhibited Nernstian response (26,6 mV/decade) in the region between 10-1-10-5 mol/L with a the detection limit of 10-5 mol/L for copper cation. The working pH of the electrode was in the 2-5 range, the response time 30-60 s and can be used for least 3 month