Method for use of an electrochemical sensor and electrodes forming said sensor
US7875164B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 19, 2006 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for in situ self-calibrating of an electrochemical sensor for measuring the concentration of one or more species in an aqueous medium. The method includes: taking a first measurement of the current of a working electrode representative of the concentration of dissolved oxygen in the medium, applying an anode current of predetermined density and duration to a generating electrode to produce a defined increase in the local concentration of the dissolved oxygen, taking a second measurement of the current of the working electrode representative of the concentration of oxygen after applying the anode current to the generating electrode, and computing from the first and second measurements a calibration factor for one or more species that relates the oxygen concentration of the medium to be analyzed and the actually measured current between the working electrode and its counter electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.