The Study of the Voltammetric Behaviour of 7-methylguanosine on Glassy Carbon Electrode
Lan Zhang
Abstract
Lan Zhang
Abstract
The electrochemical response of 7-methylguanosine in pH 1.98 B-R buffer was investigated by cyclic voltammetry(CV),linear sweep voltammetry(LSV) and differential pulse voltammetry(DPV) method.The differential pules voltammetry exhibited an oxidation current peak of 7-methylguanosine at the potential of +1.036 V(vs.SCE).The peak current is linearly increased with the concentration of 7-methylguanosine in the range of 5.0×10-5~2.0×10-6 mol/L.The detection limit is 4.1×10-7 mol/L.The possible mechanism for the irreversible reaction was assumed to be the oxidation lossing of one proton and two electrons.
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The electrochemical response of 7-methylguanosine in pH 1.98 B-R buffer was investigated by cyclic voltammetry(CV),linear sweep voltammetry(LSV) and differential pulse voltammetry(DPV) method.The differential pules voltammetry exhibited an oxidation current peak of 7-methylguanosine at the potential of +1.036 V(vs.SCE).The peak current is linearly increased with the concentration of 7-methylguanosine in the range of 5.0×10-5~2.0×10-6 mol/L.The detection limit is 4.1×10-7 mol/L.The possible mechanism for the irreversible reaction was assumed to be the oxidation lossing of one proton and two electrons.
Key concepts: Differential pulse voltammetry, Linear sweep voltammetry, Voltammetry, Cyclic voltammetry, Chemistry, Electrochemistry, Analytical Chemistry (journal), Detection limit