Ion mobility spectrometers with improved resolution

Details Ion mobility spectrometers with improved resolution Ion mobility spectrometers with improved resolution

G - Physics

01

N

G01N 27/00 (2006.01) G01N 27/62 (2006.01) G01N 27/64 (2006.01) H01J 49/00 (2006.01)

Patent

CA 2436256

An apparatus is provided for detecting whether substances of interest are present in a sample of air. The apparatus includes a detector, such as an ion trap mobility spectrometer. The detector is operated at a high drift voltage and then is switched to a low drift voltage. Spectra are collected at the high and low field strengths and are compared with standard spectra at those strengths to determine whether materials of interest are present.

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