Table 2.
Negative ionization screening in swabs from real samples analyzed by DART-LTQ/Orbitrap
| Sample no. | Suspected composition | [TNT–H]− | *[RDX + 35Cl]− | [RDX + NO3]− | *[HMX + 35Cl]− | [HMX + NO3]− | [PETN-H]− | *[PETN + 35Cl]− | [PETN-NO3]− |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Unknown | – | – | – | – | – | – | – | – |
| 2 | Cyclotol a | + | + | + | – | – | – | – | – |
| 3 | Tolite b | + | – | – | – | – | – | – | – |
| 4 | Unknown | – | + | + | – | – | – | – | – |
| 5 | Unknown | + | + | + | + | + | – | – | – |
| 6 | RDX + aluminum | – | + | + | – | – | – | – | – |
| 7 | Trotyl c | + | – | – | – | – | – | – | – |
| 8 | Tolite | + | – | – | – | – | – | – | – |
| 9 | Trotyl | + | – | – | – | – | – | – | – |
| 10 | Unknown | – | – | – | – | – | + | + | + |
| 11 | Unknown | + | – | – | – | – | – | – | – |
| 12 | Trotyl | + | – | – | – | – | – | – | – |
| 13 | Trotyl | + | – | – | – | – | – | – | – |
| 14 | Amatol d | + | – | – | – | – | – | – | – |
| 15 | Unknown | – | + | + | + | + | – | – | – |
“+”considered ion was detected in the mass spectrum, “–” the ion was absent
a Mixture of RDX and TNT
b TNT-based weapon
c TNT-based weapon
d Military explosive containing TNT and ammonium nitrate
*37Cl adduct was observed for all adduct containing 35Cl