US 2004/0063152 A1 · Method for electrochemical analysis, corresponding configurations and the use thereof

Abstract

Redox (re)cycling is improved in terms of the measurement technique in such a way that the redox potential created by a redox pair is measured on a reference electrode in an electroless manner. A configuration adapted to the method contains an electrode system having at least three electrodes: one working electrode, one counter electrode and one reference electrode. The reference electrode is arranged in such a way that it is adjacent to at least partial areas of the two other electrodes, and preferably, at an equal distance from the partial areas. In terms of redox recycling, the electrode system is suitable, for example, for detecting enzyme-coupled identification reactions, but also for measuring an oxygen partial pressure or hydrogen peroxide.

Claims23

Dependent claims

An electrochemical analysis method by means of redox-(re)cycling, comprising the following method steps:

the reduced form of a substance is oxidized at an electrode, and the oxidized form of the substance produced is reduced to the original form of the substrate at another electrode, so that together what is known as a redox pair is formed,
signal amplification for subsequent signal evaluation is effected by a cyclic sequence of oxidation and reduction at the two electrodes, known as the redox electrodes,
a redox potential which is dependent on the ratio of the concentrations or activities of the redox pair and forms at a catalytically active surface is tapped without current and, as reference-ground potential, is used as the basis for the signal evaluation by means of electrochemical measurement technology.

Dependencies are inferred from the claim text.

Method for electrochemical analysis, corresponding configurations and the use thereof

Life of this patent

Method for electrochemical analysis, corresponding configurations and the use thereof

Life of this patent

Abstract

Claims23