Ion trap mobility spectrometer and method of using the same
US8866073B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2014 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/427
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for detecting constituents in a sample includes a casing and an ionization chamber defined by the casing. The apparatus also includes an ion collector positioned downstream of the ionization chamber. The apparatus further includes a spectral analysis device coupled to the ion collector. The spectral analysis device is configured to generate a detection spectrum representative of ions collected at the ion collector. The detection spectrum includes an analyte peak portion and a peak tailing portion. The apparatus also includes a control system that is configured to generate a first pulse having a first polarity to initiate a discharge of stored ions from the ionization chamber. The control system is also configured to generate a second pulse substantially immediately after the first pulse. The second pulse has a second polarity opposite the first polarity and is configured to reduce the peak tailing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.