Skin Exposure Auxiliary Equipment Dose Monitoring Racks & Carts Dilution Dose Supply Exposure Systems Technical Data TOF-mass analyzer ○ Direct reflection time of flight mass spectrometer (flight path 0.9 m) ○ Mass range: 10 – 2000 Th (m/z) (standard configuration) ○ Mass resolution: m/Δm = 2000 ○ Mass accuracy: 100 ppm ○ Maximal primary data acquisition rate: 100 kHz Rack configuration ○ 2x19”-module rack ○ Dimensions 1 200 x 800 x 1 300 mm (W x D x H) ○ Power supply 100-230 V, 50/60 Hz Data acquisition and visualization software ○ Data is displayed in real time ○ Actual measured mass spectra and the variation of selected ions is displayed ○ Data can be exported (formats e.g.: txt , CSV) ○ Customer specific data anlysis software available. VUV-photo ionization (SPI): Universal soft ionization of organic compounds VUV lamp with 9.8 eV - 10.78 eV (126 nm - 115 nm) or Nd:YAG laser with third harmonic generation VUV-cell with 10.5 eV (118 nm) ○ detection limits for most organics in ppb region Laser-photo ionization (REMPI): Superior selectivity and sensitivity for aromatics (optional) Fixed frequency (266 or 248 nm) or tunable lasers (OPO) in wavelengths range 206 nm - 300 nm ○ detection limits for most aromatics in low ppb or ppt region Electron ionization (EI) Standard fragmenting ionization technique (optional) 70 eV for mass spectra with standard fragmentation (NIST) or tunable from 5 eV to 90 eV (special setup) ○ detection limits in ppm - ppb range Multiplexing ionization mode (MIM) Achieving SPI, REMPI and EI results simultaneously (optional) The ionization methods (REMPI/EI/SPI) can be operated quasi-simultaneously via multiplexed acquisition methods. Direct inlet TOFMS of diesel fuel headspace, recorded with (A) single photon ionization (SPI), (B) resonance enhanced multiphoton ionization (REMPI) and (C) electron impact ionization (EI). 3 D graph showing different constituents of the gas phase from 10 puffs of a 3R4F cigarette. (A) (B) (C) 171
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