Stabilized cell acquisition for elemental analysis
US12013391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2019 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Aug 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2560/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Analyzing samples injected into an inductively coupled plasma source can be improved by one or more of a stabilizing solution mixable with a sample prior to injection and a heated injector. The stabilizing solution can minimize the difference in osmotic pressure between the solution and the cells with a relatively low amount of dissolved solids (e.g., at or below about 0.2%). The stabilizing solution can contain a salt (e.g., ammonium nitrate) present in concentrations of at least 5 mM. The injector can be heated before and/or during injection. In some cases, heat from adjacent parts can be channeled into the injector to improve heating of the injector. An injector heated to sufficient temperatures can minimize solute buildup and can extend the usable time between cleanings. These improvements can be especially useful in elemental analysis, such as inductively coupled plasma mass spectrometry or inductively coupled plasma optical emission spectrometry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.