Patent · US Active

Detection of analytes using ion mobility spectrometry

US7985949B2 · kind B2 · utility

51Cited by
32References
36Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 30, 2008
Grant dateJul 26, 2011
Priority date—
Expiry dateJun 3, 2029

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N27/622
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Methods and systems are provided for detecting analytes in a gas phase sample. An ion mobility spectrometer is provided for detecting analytes having an excess amount of dopant in its separation region. In an embodiment, the dopant is added directly to the separation region, such as with a drift gas or by diffusion, thereby providing excess dopant that dominates subsequent cluster formation and maintenance. Excess dopant in the separation region minimizes or reduces interfering signals associated with unwanted substances, such as water vapor, that are introduced to the IMS. In an aspect, the invention provides IMS systems and methods having increased sensitivity and reliability for analyte detection.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.