Determination of metal and metalloid concentrations using ICPMS
US9406490B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2015 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | May 4, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B14/45
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for determining an analyte by inductively coupled plasma mass spectrometry (ICPMS) includes a sample introduction device having a heated cyclonic spray chamber. The system is configured to introduce sample that includes a metal and/or a metalloid having an organic interferent. The system also includes an inductively coupled plasma mass spectrometry device with a collision/reaction cell configured to receive a mixture of gases including both ammonia and hydrogen. A method includes introducing a sample to plasma to produce a characteristic spectrum associated with an elemental composition of the sample. The method also includes introducing both ammonia and hydrogen to a collision/reaction cell to remove carbon-based interferences to detection of the sample prior to determining the elemental composition of the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.