Miniature ion source of fixed geometry
US10236171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2014 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Oct 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/044
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mass spectrometer is disclosed comprising an atmospheric pressure interface comprising a gas cone having an inlet aperture, wherein the gas cone has a first longitudinal axis arranged along an x-axis and an Electrospray ion source comprising a first capillary tube having an outlet and having a second longitudinal axis and a second capillary tube which surrounds the first capillary tube. The mass spectrometer further comprises a desolvation gas supply tube and a first device arranged and adapted to supply an analyte liquid via the first capillary tube so that the liquid exits the outlet of the first capillary tube at a flow rate >200 μL/min. The mass spectrometer further comprises a second device arranged and adapted to supply a nebuliser gas via the second capillary tube at a flow rate in the range 80-150 L/hr, wherein an outlet of the first capillary tube is arranged at a distance x mm along the x-axis as measured from the centre of the gas cone inlet aperture, a distance y mm along a y-axis as measured from the centre of the gas cone inlet aperture and a distance z mm along a z-axis as measured from the centre of the gas cone inlet aperture. The x-axis, the y-axis and the z-axi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.