تحضير قطب انتقائي لأيون النيكل الثنائي بالاعتماد على المادة الفعالة Dibenzo-18-Crown-6 باستخدام بوليمر PVC

الملخص EN

A Nickel (II) ion-selective electrode was prepared ; depend on the active material DB18C6 as a sensor, deposed in poly vinyl chloride PVC polymer, and using (DBPH) as a plastizier substance, in membrane.

The behavior and characteristics properties of this electrode have been studied.

The calibration linear range was (1x10-1-1x10-8) mol/ L nickel with a correlation coefficient of (0.9976) relative standard error of 1.221 % and a relative standard deviation of 1.899 %.

The linearity slop is equal to 29 mV/decade with a detection limit of 5 x 10-8 mol/ L.

The selectivity coefficient Ki,j pot of the electrode was calculated, in the presence of some interferences cations.

It was found that the electrode response in the pH range of (2-8), with response time of (10- 48) sec.

for different concentrations at 25Co, the electrode lifetime was found to be 24 days, the effect of using different plasticizer substances was alsostudied.