CONTENTS
Preface ....................................................................................................................................... ii
Introduction ............................................................................................................................... 1
Experimental methods ............................................................................................................... 1
Preliminary experiments ............................................................................................................ 2
Unsuitability of Tedlar bag/solid phase microextraction/headspace analysis for
determination of fluxes .................................................................................................... 2
Sorption of ERC on Tedlar ................................................................................................... 2
Potential breakthrough of ERC in Tedlar ............................................................................. 2
Results and discussion ............................................................................................................... 2
Fluxes in air .......................................................................................................................... 2
Fluxes in water--Why are they different? ............................................................................ 6
Implications for land mine detection by vapor sensing ........................................................ 8
Summary and conclusions ......................................................................................................... 9
Literature cited ........................................................................................................................... 9
Appendix A: Fluxes of ERC from land mines ........................................................................... 11
Abstract ...................................................................................................................................... 13
ILLUSTRATIONS
Figure
1. Mean flux of ERC from the test mines .............................................................................
3
2. Flux of ERC from PMA2 mines .......................................................................................
6
3. Mass of DNB, DNT and TNT released from PMA2 in water at 21.5C ..........................
7
4. Masses released from PPM2 in water at 21.5C ...............................................................
7
5. Mass of RDX released from VS-50 in water at 21.5C ....................................................
8
TABLES
Table
1. Brief descriptions of the land mines tested .......................................................................
1
2. Temperature dependence of mean ERC flux by mine type fitted to F = aebt ...................
5
3. Comparison of air and water fluxes at 22C .....................................................................
9
iii
Previous Page
