Mobile GC/MS Detector
Bruker's mobile GC/MS platform delivers laboratory-quality, compound-specific chemical identification on site — in the low-ppb range, across soil, water, and air matrices — without returning samples to a fixed laboratory.
Bruker's mobile Gas Chromatography / Mass Spectrometry (GC/MS) detectors — the E²M and its ruggedised military sibling the MM2 — are man-portable, quadrupole mass spectrometry systems designed to provide definitive on-site identification of volatile organic chemicals and threat agents in the field. Unlike ion mobility spectrometry (IMS) detectors that screen for a pre-defined library, GC/MS delivers full mass spectra that can be cross-referenced against libraries of up to 150,000 compounds, making the technology suitable for both known-threat confirmation and unknown-substance characterisation in a single instrument run.
The core operational advantage is the combination of a gas chromatograph front-end with a quadrupole mass spectrometer, connected by a semi-permeable silicone membrane inlet probe that accepts vapour and surface swabs. Room air serves as the carrier gas, eliminating consumable gas cylinders. For ambient air screening the system provides a real-time response in under one minute; for low-concentration unknowns, a 10–15 minute GC/MS cycle achieves detection in the low-ppb range. The systems are qualified to MIL-STD-810F, operate across –32 to +49°C, and run from 18–32 V DC vehicle power, making them viable in ramp environments and harsh desert climates without infrastructure support.
In aviation-security and defence contexts, the platform fills the gap between front-line IMS swab checks and fixed laboratory analysis: it is deployed by hazmat and CBRN response teams investigating a suspected release at an airport or air base, by customs authorities verifying cargo against known narcotics and precursor profiles, and by military units requiring a gold-standard chemical confirmation before escalating a CBRN alert. The E²M and MM2 are used extensively by armed forces and first-responder agencies globally. The instrument's ability to identify Novichok-class agents — whose low vapour pressure defeats many simpler detectors — has made it a benchmark capability for military and high-security airport environments.
Technical specifications.
| Detection method | Quadrupole GC/MS with membrane inlet |
| Mass range | 1–520 amu |
| Ionisation | 70 eV electron ionisation |
| Spectral library | Up to 150,000 compounds (NIST-searchable) |
| Detection sensitivity | Low ppb (adsorbent enrichment) to ~1 ppm (on-line air monitoring) |
| Real-time response time | <1 minute (on-line monitoring mode) |
| Full GC/MS cycle time | 10–15 minutes |
| Military standard | MIL-STD-810F |
| Carrier gas | Room air (no consumable gas cylinders required) |
| MTBF | 4,000 hours |
| Power input | 18–32 V DC; max 400 W |
| Operating temperature | −32 to +49 °C |
| Weight (E²M) | 37 kg |
| Weight (MM2) | 35 kg |
| Dimensions | 390 × 390 × 280 mm (approx.) |
Use cases.
- ›On-site chemical threat confirmation by airport CBRN or hazmat response teams following an IMS alert
- ›Cargo and mail inspection for narcotics, precursors, and explosive compounds at air-freight hubs
- ›Military field verification of chemical warfare agents including low-vapour-pressure Novichok-class substances
- ›Environmental forensics on ramp spills — fuel, de-icing fluid, or industrial chemical identification
- ›Unknown-substance characterisation at incident scenes where library-limited detectors are insufficient
- ›Vehicle-mounted perimeter patrol for airside chemical monitoring at large hub or defence airports