Atomic absorption spectrophotometer
US4728189A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1987 |
| Grant date | Mar 1, 1988 |
| Priority date | — |
| Expiry date | Jan 23, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An absorption profile indicative of a relation in atomic absorption spectroscopy between the absorbance of a desired element and time has a constant half-width independent of the concentration of the desired element in a sample, and hence the half-width of absorption profile with respect to the desired element can be previously determined from data which is obtained by the measurement of a standard sample. In an atomic absorption spectrophotometer herein disclosed, the half-width of absorption profile is previously determined in the above-mentioned manner, and the true peak value of an absorption profile obtained by measuring a sample which contains the desired element at a high concentration, is calculated using the time width of this absorption profile at a predetermined absorbance and the previously-determined half-width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.