Sample introduction system for inductively coupled plasma and other gas-phase, or particle, detectors utilizing ultrasonic nebulization, and method of use
US5259254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1991 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An efficient sample introduction system and method of use, for accepting liquid sample solutions, nebulizing them to form nebulized sample solution droplets, and introducing the nebulized sample solution droplets to sample analysis systems is disclosed. In the preferred embodiment desolvation of produced nebulized sample solution droplets, and solvent removal, to provide nebulized sample particles is performed prior to entering sample to a sample analysis system. Nebulization of sample solutions is accomplished by use of high efficiency ultrasonic nebulizers and solvent removal is accomplished by use of high efficiency enclosed filter and solvent vapor removal gas flow or low temperature condenser systems. The sample introduction system provides improved sample solution nebulization, desolvation and solvent removal, as well as reduced sample loss and carry-over of sample from one analysis procedure to a subsequent analysis procedure, as compared to other systems which perform a similar overall function. The sample introduction system also enhances transport of sample through the sample introduction system to a sample analysis system. The present invention is equally effective with …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.