Tube cell for atomic absorption spectrophotometry
US4708478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Nov 3, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A tube cell for flameless atomic absorption spectrophotometry has a transverse cross-section with the portion above a longitudinally extending line midway between the top and bottom of the tube cell having a smaller cross-sectional area than the portion below that line. The tube cell has an elongated aperture formed close to the bottom of the tube cell for inserting a probe or platform carrying a sample to be analyzed. The cross-section of the tube cell is shaped to maximize the size of the probe which can be used, and accordingly, the sample volume, while keeping the total cross-sectional area to a minimum in order to maximize chemical sensitivity. A number of different cross-sectional shapes are described including a triangular cross-section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.