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Atmospheric pressure ionization mass spectrometer
US9040902B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9040902-B2 |
| Application number | US-201114352191-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 17, 2011 |
| Priority date | Oct 17, 2011 |
| Publication date | May 26, 2015 |
| Grant date | May 26, 2015 |
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Abstract
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In an atmospheric pressure ionization source using an ESI or the like having a desolvation pipe with one end opening serving as an ion-drawing port, a drying-gas supplying port for supplying a drying gas against the ion-drawing direction is provided below the ion-drawing port, i.e. at a position opposite to the side where a nozzle for spraying a liquid sample into an atmospheric pressure atmosphere is located, as viewed from the ion-drawing port. When the drying gas is supplied from the drying-gas supplying port, the gas pressure becomes higher in a region above the ion-drawing port becomes higher than in a region below the same port and produces a downward air stream. This stream helps ions in the spray flow from the nozzle to easily come close to the ion-drawing port and be efficiently drawn into the desolvation pipe.
First claim
Opening claim text (preview).
The invention claimed is: 1. An atmospheric pressure ionization mass spectrometer having: a spray device for spraying a liquid into an ionization chamber whose inner space is maintained at atmospheric pressure; and an ion-drawing port for drawing ions generated from micro droplets sprayed from the spray device so as to transport the ions to a subsequent stage maintained at a low gas pressure, the central axis of the ion-drawing port being unidentical with the central axis of a spra…
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Classifications
- H01J49/0445Primary
Electricity · mapped topic
- H01J49/04Primary
Electricity · mapped topic
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- What does patent US9040902B2 cover?
- In an atmospheric pressure ionization source using an ESI or the like having a desolvation pipe with one end opening serving as an ion-drawing port, a drying-gas supplying port for supplying a drying gas against the ion-drawing direction is provided below the ion-drawing port, i.e. at a position opposite to the side where a nozzle for spraying a liquid sample into an atmospheric pressure atmosp…
- Who is the assignee on this patent?
- Ueda Manabu, Okumura Daisuke, Shimadzu Corp
- What technology area does this patent fall under?
- Primary CPC classification H01J49/0445. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 26 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).