Reduction of carbon monoxide interference in gaseous analyte detectors
US7611671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Jul 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/179228
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Highly sensitive devices for detecting nitric oxide and/or other gaseous analytes in gaseous samples are improved by the incorporation of a carbon monoxide scavenger in the interior of the device or in the device packaging. The release of carbon monoxide within the housing of the device by the plastic used in the construction of the housing or by anything within the device that releases carbon monoxide causes a loss in sensitivity due to competition between the carbon monoxide and the nitric oxide for the binding sites on the device sensor. The scavenger corrects this by either catalyzing the oxidation of carbon monoxide to the less competitive carbon dioxide or immobilizing the carbon monoxide by affinity-type or covalent binding. Analogous effects are achieved for analytes other than nitric oxide but that likewise encounter interference from carbon monoxide in binding to sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.