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Articles you may be interested inNote: Design and construction of a simple and reliable printed circuit board-substrate Bradbury-Nielsen gate for ion mobility spectrometry Rev. Sci. Instrum. 82, 086103 (2011); Programmable ion mobility spectrometer: Time resolution improvement and ion counter comparison Rev. Sci. Instrum. 76, 086109 (2005); 10.1063/1.2010469 High-resolution ion mobility measurements Rev. Abstract. This work presents the possibilities offered by a blind source separation method such Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) in the analysis of Ion Mobility Spectra (IMS). Two security applications are analyzed in this context: the detection of TNT both in synthetic and real samples. Results obtained show the possibilities offered by the direct analysis of the drift time spectra when an appropriate resolution method is used.