| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine the quantity of low redox species concentration of a sample. <P>SOLUTION: A redox species concentration measurement method includes a redox cycle in which constant oxidation potential is applied to a first electrode, and constant reduction potential is applied to a second electrode, using a comb-shaped microelectrode. In the method, current i<SB>t1</SB><SP>(total)</SP>in the first electrode and a counter electrode at elapsed time t1 from the application of the reduction potential to the second electrode, and current i<SB>t2</SB><SP>(total)</SP>in the first electrode and a counter electrode at elapsed time t2 from the application of the reduction potential to the second electrode are measured. The redox species concentration is calculated by formula 1 defined beforehand. In the formula 1, the elapsed time t and the redox species concentration C<SP>(Redox)</SP>have the following relationship. The ratio of i<SB>t1</SB><SP>(total)</SP>to i<SB>t2</SB><SP>(total)</SP>is equal to the ratio of t1^ (-1/ä1+0.5x(10+logC<SP>(Redox)</SP>)}) to t2^ (-1/ä1+0.5x (10+logC<SP>(Redox)</SP>)}). <P>COPYRIGHT: (C)2011,JPO&INPIT |
