Polarographic instrument system for oxygen and hydrogen measurement
US8702925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2011 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Sep 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for measuring hydrogen (H2) and oxygen (O2) including a sample system, a signal processing and system control device, at least one polarograph device and a computing device equipped with software for environmental and biological data analysis incorporating both user-defined and environmental data acquired by the signal processing and system control device. The system measures gas level or exchange (production and/or consumption) in the field or laboratory. In some embodiments, the system uses two Clark-type polarograph devices oppositely polarized with gas-specific polarographic circuits, wherein one polarograph device measures H2 gas and the other measures O2 gas. In some embodiments, the sample system includes an environmentally-controlled sample housing for accepting the polarograph devices and holding a test sample in a reservoir. The system measures H2 or O2 exchange in microbial samples, including microbial phototrophs which couple light harvesting to H2 and/or O2 exchange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.