Inductively coupled plasma atomic fluorescence spectrometer
US4300834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | May 22, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/73
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductively coupled plasma atomic fluorescence spectrometer (ICP-AFS) for multielement analysis of unknown samples. The ICP-AFS spectrometer comprises a plasma stream atomizing a dispersed sample and directed along a central axis, a plurality of optical stations surrounding the central axis, each including an energizing illuminator and a fluorescence detector focused at the same region of the plasma stream, and a readout system for identifying the unknown samples. Preferably, the plasma stream is controlled by inductive coupling, the energizing illuminator is a modified hollow cathode lamp, the fluorescence detector includes an interference filter, and the readout system incorporates multiplexing and intermittent modulation of the energizing illuminators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.