Sample analysis method
First Claim
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1. A sample analysis method, comprising:
- (a) applying a voltage between a first electrode pair, which is formed so as to sandwich a migration pathway of a sample such that an electric field is formed in a direction intersecting a migration direction of the sample;
(b) causing a first current, which arises from a redox reaction, to flow to the first electrode pair by placing, within the migration pathway interposed between the first electrode pair, a solution including an electrochemically active molecule that produces the redox reaction at the first electrode pair;
(c) causing the sample to migrate along the migration pathway interposed between the first electrode pair; and
(d) measuring an amount of change in the first current produced by migration of the sample.
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Abstract
The analysis method allows analysis of samples with high sensitivity, irrespective of interelectrode distance. The method includes: a step of applying a voltage between a first electrode pair such that an electric field is formed in a direction intersecting a migration direction of a sample; a step of placing a solution, including an electrochemically active molecule that produces a redox reaction at the electrode pair, between the first electrode pair; a step of causing the sample to migrate; and a step of measuring an amount of change in current flow between the first electrode pair.
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Citations
15 Claims
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1. A sample analysis method, comprising:
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(a) applying a voltage between a first electrode pair, which is formed so as to sandwich a migration pathway of a sample such that an electric field is formed in a direction intersecting a migration direction of the sample; (b) causing a first current, which arises from a redox reaction, to flow to the first electrode pair by placing, within the migration pathway interposed between the first electrode pair, a solution including an electrochemically active molecule that produces the redox reaction at the first electrode pair; (c) causing the sample to migrate along the migration pathway interposed between the first electrode pair; and (d) measuring an amount of change in the first current produced by migration of the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification