Ion Mobility Spectrometry
Abstract Emerging already since a few decades, Ion Mobility Spectrometry (IMS) is an analytical technique initially developed for detecting traces of gaseous organic compounds in air. Comparable with Time-of- Flight Mass Spectrometry, the method relies on separation of ions on different drift velocities in an electric field as a result of their different masses and geometrical structures . The importance of IMS grew significantly nowadays owing to its high sensitivity in detection and monitoring of explosive traces and narcotics, but also for its support in on-site investigations.
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