Design and development of a new electrochemical sensor for determination of Nickel in aqueous sulotion

In this study, an electrochemical sensor based on carbon monoxide-modified (CP) polymer modified molecule (MIP) polymer was designed and used to determination of nickel ions. The nickel benzoate complex, 2- Hydroxyethyl methacrylate, 2, 2. Azobutyl-isobutylnitrile and ethylene glycol di-methacrylate were used for polymer molecular prepared. Then, a modified carbon electrode was made using polymer prepared for determination of  nickel ions in aqueous sulotion. Some factors such as pH, temperature, percent composition of the imprinted polymer and the electrode have been studied. The electrode exhibits a Nernstian response for Ni+2 over a wide concentration range (1.00 × 10-1 – 1.00 × 10-10 M) with a slope of 30/66±0.4 mV per decade. It displays a response time of about 5 s and can be used for a period of 10 weeks with good reproducibility. The detection limit obtained in the optimal conditions was 5.00×10-9 M. It concluded that the electrode can successfully use for potentiometric determination of Ni2+ in some waste water samples.