1. Validation of an ion mobility spectrometry (IMS) method for the detection of heroin and cocaine on incriminated material 
Franz E. Dussy, Christian Berchtold, Thomas A. Briellmann, Candid Lang, René Steiger, Michael Bovens 
Forensic Science International 
Volume 177, Issue 2, Pages (May 2008)
DOI: /j.forsciint
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions

2. Fig. 1
Handheld vacuum cleaner with changeable brush and Teflon filter.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions

3. Fig. 2
Schematic description of the measuring device of an IMS. Source: Operators manual of Ionscan 350, Barringer Instruments.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions

4. Fig. 3
Left plasmagram: cocaine reference material deposited on the filter. Right plasmagram: cocaine reference material mixed with starch. Upper plasmagram: 3D view. Lower plasmagram: 2D view.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions

5. Fig. 4 Plasmagrams of two detergents (left: dash, right: universal).
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions

6. Fig. 5
Suppression of the signal for heroin in the presence of cocaine.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions

7. Fig. 6 Effects of four different matrices.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2007 Elsevier Ireland Ltd Terms and Conditions