Graphite tube furnace with specimen support for atomic absorption spectroscopy
US4971438A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A graphite tube furnace and a specimen support are provided for atomic absorption spectroscopy. The graphite tube furnace has end surfaces with slots. The specimen support has an intermediate or middle section with a recess for receiving a specimen and end sections which are wider than the middle section. Upon insertion in the graphite tube furnace, the specimen support is fixed with the wider end sections in the slots in the end faces and the intermediate section is held at a constant distance from the wall of the tube furnace. As a result, current conduction and heat flow between tube furnace and the specimen support are very small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.