Preparation of chloride selective membrane electrode

In this study, the novel membrane chloride-selective electrode consisting of 30% of tridodesylmethylammoniumchloride (TDMC) as the active material, 50% of PVC as the membrane matrix and 20% of dibutylphatalate (DBF) as the plasticizer wasdeveloped. In this electrode, the potential change occurs from 10-5 to 10-1 M chloride ion and the slope of linear portion corresponds to 55,0± 2,0mV per decade change of chloride concentration. Furthermore, the interference effects of some ions, such as F-, I-, NO3-, SO42-, Na+, K+, Cu2+ and Fe3+ were not observed.The response time and lifetime of electrode was 60 s and 6 months, respectively. It has been observed that pH did not affect the sensitivity of the electrode. This electrode has been used for the direct determination of 32,0 ± 0,5 mg/L chloride in the spring water.