Scanning electrochemical microscopy was used to study the lifetime of guanosine radical, which was generated by one-electron oxidation of guanosine. In the experiments, guanosine was oxidized at an SECM tip ultramicroelectrode and the cation radical was reduced at a conductive substrate. At the tip–substrate distance of 0.3 µm, the tip current was –1.1*10–9 A and the substrate current was 1.1*10–11 A. Calculate the percentage of tip-generated guanosine radical molecules that were detected at the substrate.
Scanning electrochemical microscopy was used to study the lifetime of guanosine radical, which was generated by one-electron oxidation of guanosine. In the experiments, guanosine was oxidized at an SECM tip ultramicroelectrode and the cation radical was reduced at a conductive substrate. At the tip–substrate distance of 0.3 µm, the tip current was –1.1*10–9 A and the substrate current was 1.1*10–11 A. Calculate the percentage of tip-generated guanosine radical molecules that were detected at the substrate.
Chapter34: Miscellaneous Separation Methods
Section: Chapter Questions
Problem 34.19QAP
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Scanning
At the tip–substrate distance of 0.3 µm, the tip current was –1.1*10–9 A and the substrate current was 1.1*10–11 A. Calculate the percentage of tip-generated guanosine radical molecules that were detected at the substrate.
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