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Ion mobility spectrometer using frequency-domain separation

Patent ·
OSTI ID:871760
 [1];  [1];  [2];  [1]
  1. Albuquerque, NM
  2. Cedar Crest, NM
+ Show Author Affiliations

An apparatus and method is provided for separating and analyzing chemical species in an ion mobility spectrometer using a frequency-domain technique wherein the ions generated from the chemical species are selectively transported through an ion flow channel having a moving electrical potential therein. The moving electrical potential allows the ions to be selected according to ion mobility, with certain of the ions being transported to an ion detector and other of the ions being effectively discriminated against. The apparatus and method have applications for sensitive chemical detection and analysis for monitoring of exhaust gases, hazardous waste sites, industrial processes, aerospace systems, non-proliferation, and treaty verification. The apparatus can be formed as a microelectromechanical device (i.e. a micromachine).

Research Organization:
SANDIA CORP
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
US 5789745
OSTI ID:
871760
Country of Publication:
United States
Language:
English

References (3)

Using nonlinear fields in high pressure spectrometry journal December 1989
Ion Mobility Spectrometry in Analytical Chemistry journal January 1990
Radiofrequency Mass Spectrometer journal February 1950

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