S. Abd Hakim, Krista Tarigan, Manihar Situmorang, Timbangen Sembiring
Potentiometrie ion sensor (ISE) is very attractive because of its small size, easy to carry, more durable, and miniature easy to use. ISE consists of an indicator electrode and a reference electrode located in an electrolyte solution. Potentiometric electrodes and electrochemical properties can be achieved through membrane synthesis and selectivity by the interaction of primary ions with respect to cavity size, molecular geometry and types of functional groups leading to the interaction between electrolyte solutions, membranes and indicator electrodes with reference electrodes. Indicator electrodes function as urea analytes. Potentiometric characteristics are significantly dependent on the composition of the membrane, the nature of the plasticizers. Characterization of membrane composition was carried out using (UV-Vis, SEM-EDX, and XRD). Characterization of PVA membrane : PVC in the composition of 1 : 1 of 0.0350 g PVA and plasticizer 0.0700 g KTpClPB variation of membrane electrode layer and enzyme 1 mg. The optimum amount of diffraction intensity is obtained from PVA E 4X PVC-KTpClPB 0.0700. © 2019 IOP Publishing Ltd.
Physics Department, Faculty of Math and Science Negeri Medan, Medan, Indonesia; Physics Department, Faculty of Math and Science, Universitas Sumatera Utara, Medan, Indonesia; Chemistry Department, Faculty of Math and Science, Universitas Negeri Medan, Medan, Indonesia
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