System for introducing a sample substance into a spectroscopical analytical instrument
US5071624A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for introducing a sample substance into a spectroscopical analytical instrument which includes a first pump which, when on, pumps a sample liquid and a buffer liquid, and a second pump which, when on, pumps an eluting liquid and rinsing liquid. The system includes an ion exchanger column for retaining the elements of the sample to be determined and which can be eluted by the eluting liquid. A dosing capillary serves to introduce the sample into the furnace of an atomic absorption spectrometer. A valve has a first position wherein the first end of the ion exchanger column communicates with the first pump and the second end communicates with a waste outlet port, and the dosing capillary communicates with a source of displacing fluid; and a second position wherein the second end of the ion exchanger column communicates with the second pump and the first end communicates with the dosing capillary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.