Atmospheric pressure ionization with optimized drying gas flow
US7145136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2004 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | May 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/044
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for use in atmospheric pressure ionization includes a sample receiving chamber, a sample droplet source communicating with the sample receiving chamber, an outlet conduit, and a boundary. The outlet conduit defines a sampling orifice that communicates with the sample receiving chamber. The boundary is interposed between the sample receiving chamber and the sampling orifice and comprises an opening. The opening defines a first passage through which a drying gas is flowable into the sample receiving chamber in an elongated flow profile, and a second passage through which sample material is flowable from the sample receiving chamber toward the sampling orifice. The first passage is positioned in non-coaxial relation to the second passage. The first passage is configured to introduce the elongated flow profile of the drying gas into a pathway of droplets of the sample material flowing toward the second passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.