Admissions Open
Admissions Open
Abstract
The performance characteristics of polymeric membrane electrodes based on [(4-chlorobenzylidene)-thiourea]-amine have been prepared for the quantification of Zn2+ relative to a wide variety of other cations. Several membranes having different compositions of epoxy resin and ionophore were fabricated and the best response was observed for the membrane composition, sensor: epoxy in the ratio of 40: 60 (w/w), it exhibited a very good response for Zn2+ in a wide concentration range from 1.0×10−7 to 1.0×10−1 M with a slope of 22.82 ± 0.1mV per decade of Zn2+ ion concentration having fast response time less than 3 second. It can be used at least for 3 months without any difference in potential and the effect of internal solution concentration was also studied. The working pH range of this sensor was 1.0–9.8 and the practical utility of the sensor has been shown by using it as an indicator electrode in the potentiometric titration with EDTA.