Photoresponsive electrode for determination of redox potential
US4963815A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1987 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Feb 10, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/305
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Devices and methods are provided for determining the presence and amount of an analyte by measuring a redox potential-modulated photoinducing signal from a photoresponsive element. Further devices and methods are provided for determining the presence and amount of an analyte by measuring a redox potential, pH or ion modulated photoinduced signal from a photoresponsive element, where one signal is a constant system and the other signal(s) is a variable system. The constant system signal is used to standardize the variable system signal. Various protocols may be employed where an analyte may be directly or indirectly coupled to a redox couple, a pH or ion system for detection. The latter devices employ a photoresponsive element having a medium contacting surface, which is partially covered with an electronically conducting layer and partially covered with a protective insulative layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.