Table 3.
SAWN-MS analysis of case extracts provided by the NFI and comparison with LC-MS results using a validated and accreditedMethod at the forensic institute
| Case sample no. | LC-MS results | Sample type | SAWN-MS results |
|---|---|---|---|
| 1 | ~ 50 ng/μL PETN, ~ 200 ng/μL PETriN | Post-explosion swab | PETN |
| 2 | ~ 1 ng/μL PETN, ~ 25 ng/μL PETriN | Post-explosion swab | No explosive detected (false negative) |
| 3 | ~ 125 ng/μL TNT | Post-explosion swab | No explosive detected (false negative) |
| 4 | ~ 100 ng/μL HMTD | Post-explosion swab | No explosive detected (false negative) |
| 5 | 10 ng/μL TNT | Intact material | TNT |
| 6 | 10 ng/μL RDX | Intact material | RDX |
| 7 | 10 ng/μL PETN | Intact material | PETN |
| 8 | ~ 30 ng/μL TNT | Post-explosion swab | TNT |
| 9 | ~ 10 ng/μL PETN | Post-explosion swab | PETN |
| 10 | ~ 3 ng/μL NG | Post-explosion swab | No explosive detected (false negative) |
| 11 | ~ 3 ng/μL RDX | Post-explosion swab | RDX |
| 12 | 100 ng/μL PETN | Intact material | PETN |
| 13 | 100 ng/μL RDX | Intact material | RDX |
| 14 | 100 ng/μL TNT | Intact material | TNT |