A.S. Hakim, M. Situmorang, K. Sebayang, T. Sembiring, K. Tarigan, S. Mihardi, N.M. Noor, J. Elnovreny
Electrolyte solutions used in potentiometric cells from ion-selective electrode (ISE) sensors urea contribute to a good enzymatic reaction. This study aims to obtain electrolyte solutions that have the best response to ISE on the electrode modification membrane electrode 35 mg PVA-enzyme coating 35 mg PVC-500 mg KTpClPB. Solution analysis begins with the characterization of ISE electrode membranes using UV-vis, SEM-EDX, and XRD, the best results on electrode membranes are used as ISE. Analyzing the solution sequentially is a phosphate buffer solution, KCl phosphate buffer solution and phosphate buffer KCl injection with urea using a potentiometer, power lab, and computer to see the solution response. Based on the results of the computer response obtained a phosphate buffer solution pH 5.5, 0.001 M, 0.001 M KCl, and 0.001 M urea. © 2021, Rasayan Journal of Chemistry, c/o Dr. Pratima Sharma. All rights reserved.
Department of Physics, Universitas Negeri Medan, Jl. Willem Iskandar Pasar, Medan, V-20221, Indonesia; Department of Chemistry, Universitas Negeri Medan, Jl. Willem Iskandar Pasar, Medan, V-20221, Indonesia; Department of Physics, Universitas Sumatera Utara, Jl. Bioteknologi No, Medan, 1-20155, Indonesia; Department of Physics, Universitas Potensi Utama, Jl. KL Yos Sudarso, Medan, 20241, Indonesia
