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    STUDIA CHEMIA - Issue no. 1-2 / 2000  

  Abstract:  The main aspects concerning a new, powerful and very promising trace analysis technique - Ion Mobility Spectrometry (IMS) - are reviewed. Ion Mobility Spectrometry is based upon the separation of ions, which occurs because of their mobility differences in a relatively low intensity electrical field. Ions are obtained by the ionization of the neutral chemical species in the gaseous phase, at atmospheric pressure, by very fast and complex collisional charge exchanges and ion-molecule reactions. Included are sections which deal with the IMS principle, its theoretical basis, atmospheric pressure ionization processes, response characteristics and the corresponding instrumentation. Ion Mobility Spectrometry is definitely a technology with a very promising future, in spite of the current lack of information.  
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