Development of furfurylamine bound keto-oxime modified electrode for determination of Nickel(II) ion

In addition to causing environmental pollution, heavy metals are also an important hazard to human health. With increasing industrial activities, the presence of heavy metals in nature increases with time. For this reason, it is important to determine accurately in the presence of heavy metals. In this study, modified electrodes were used in which Ni(II) ion was used for the first time as a modifier for furfurylamine keto oxime (FKO). While cyclic voltammetry (CV) technique was used in the preparation of electrodes, differential pulse voltammetry (DPV) technique was used in the determination of Ni(II) ion. Optimum conditions for the number of cycles, scanning speed, oxime concentration, were determined among the electrochemical parameters affecting the response of the electrode. With the electrodes prepared under optimum conditions, linear responses were obtained in the concentration range of 2-10 ppm Ni(II) (R²=0.9995) and the limit of detection was found to be 0.378 (S/N= 3). Ni(II) ion was also analyzed in various water samples (pure water and tap water) and high recovery values were obtained. Key Words: Electrochemistry, Furfurylamine bound keto-oxime, Modified electrode, Nickel, Voltammetry, Heavy metal