Liquid phase ion mobility spectrometer
US11029282B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Aug 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0431
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In general, a liquid phase ion mobility spectrometer is described in which ions in a drift chamber are pushed against an increasing retarding electric field by means of liquid flow. In some examples, a method comprises ionizing an analyte to generate ions; introducing the ions into a separation region of a drift chamber; directing, at a velocity, a liquid flow through the separation region to apply first forces to the ions within the separation region of the drift chamber; using an electric field with a non-zero gradient, applying second forces to the ions within a separation region of a drift chamber, the second forces counter the first forces; modifying at least one of the velocity or the electric field; and after modifying at least one of the velocity or the electric field, detecting the ions at an ion detector to generate a signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.