Devices and Methods to improve background equivalent concentrations of elemental species
US11183379B2 · kind B2 · utility
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3References
19Claims
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Inventor
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Mar 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and systems that can use a gas comprising a nitrogen center that is introduced upstream of a plasma sustained in a torch are described. In some configurations, the gas comprising the nitrogen center can be introduced as a gas upstream of the plasma and through a sample introduction device. Mass spectrometers and optical emission systems that can use the gas comprising the nitrogen center are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.