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[References: р. 524 (10 tit.)]

In this paper for investigation of electrochemical properties of nitrogenous bases by voltammetry xanthine (Xa), adenine (A) and thymine (T) with constant-current potential sweep with differentiation were used. The electrochemical behavior of Xa, A and T on the surface of a glassy carbon electrode were investigated. The conditions of registration of their joint detecting in the solution were defined. It is demonstrated that the oxidation peak currents of Xa, A and T increased linearly with their concentration in the range of 4.0 10{-8} - 1 10{-4} mol/dm{3} for Xa, 3.0 10{-7} – 1.0 10{-4} mol/dm{3} for A, and 1.0 10{-5}– 1.1 10{-3} mol/dm{3} for T with correlation coefficients of 0.996, 0.996 and 0.999, respectively.