FIGURE 3 Vertical arrangement experiment of the collection matrices. The numbers are the sample codes marked in Figure 1.
FIGURE 4 IMS spectra of the TNT vapors collected in the LCP matrix arranged with horizontal (a) vertical and (b) positions. The amount of explosive was 10 µg.
FIGURE 5 IMS spectra of the RDX vapors collected in the LCP matrix arranged with horizontal (a) vertical and (b) positions. The amount of explosive was 20 µg.