GC chromatograph autoGCMS 866

gasprocessfor environmental analysis

Overview
Standalone autoGCMS solution for ambient air VOC monitoring, providing continuous speciated VOC analysis, trace air quality monitoring and industrial emissions analysis with high sensitivity. Modular, configurable for monitoring up to 300 VOCs with full compound speciation. Designed for field deployment in a rack-mount format; requires only electrical power.

Technical specifications (summary)

• Analyzer
  • Mass range: 1-300 amu
  • 6×100 mm rod-system with pre filter
  • Detectors: Faraday cup (high concentrations – % and for service) and SEM dynode (low concentrations – down to ppb)
• Detection limits
  • Direct MS < 50 ppb for Benzene
  • autoGCMS (with airmoVOC C10–C40 expert) < 10 ppt for Benzene
  • With chroma FID < 10 ppb for Benzene
• Mass axis stability
  • >0.2 UMA/year
• Detection range
  • With airmoVOC: 0.01 ppb to 10,000 ppb
  • With chroma FID: 10 ppb to 100,000 ppb
  • Direct MS: 7 decades dynamic range 0.1 ppm – 100 %
• Relative Standard Deviation (RSD)
  • RSD < 3 % on concentration over 48 h
  • RSD < 0.3 % on retention time over 48 h
• Results & data
  • Full result storage (data and chromatogram)
  • Embedded Windows-based computer with 10" TFT color LCD
  • 128 GB SSD internal storage
  • 4 USB ports and 2 RS-232 ports
  • MODBUS RTU / JBUS communication protocol
  • Timestamped data storage
• Cycle time
  • Instrument acquisition: 4 ms – 60 s
  • Analysis cycle: from 2 min (fast GCMS for small VOC sets) to ~60 min (trap GCMS analyzing >100 compounds)
• Gas supply
  • H2 (FID and carrier): 30 ml/min (recommended supply 2 bar; 1/16" double ferrule)
  • Air (FID): 180 ml/min (recommended supply 3 bar; 1/8" double ferrule)
  • Sample supply: sample pump connection 1/4" double ferrule
  • Pneumatic valve: 90 ml/commutation

Key features

• Modular design with optional modules to analyze >300 compounds including formaldehyde, mercaptans, OVOCs, NH3 and more
• Reference technology combining FID and MS detectors for advanced compound speciation
• Automatic alarms based on concentration thresholds or instrument status
• Stable performance: <3% RSD at 10 ppb maintained over months without routine tuning
• LOQ automatically computed by software: <10 pptv
• Calibration using single compound FID Relative Response Factors and the Effective Carbon Number concept
• Wide dynamic range from ppt to ppm in a single analysis
• Controlled multiplexing and automated data validation/calibration

Main benefits

• Approved/validated by major international institutions
• Customizable standard compound lists for on-site configuration
• Full remote control and data reporting capabilities
• No memory effects when switching between ppt and ppm levels
• Onboard zero-air generator and certified multi-compound permeation tubes for continuous self-validation
• Compatible with industrial protocols (Modbus TCP)
• Designed for field deployment with minimal site requirements

Application areas & typical compounds

• Ambient air monitoring – ozone precursors: PAMS list (56–61 compounds depending on version), 47 VOCs from Annex VII of European Directive 2024/2881, and more
• Atmospheric research: alkanes, alkenes, aromatics, oxygenated VOCs, biogenic VOCs, aldehydes (formaldehyde, acetaldehyde), PAHs, chlorinated/brominated VOCs, S-VOCs and linear alkanes up to C20 (expandable to C40)
• Toxic air monitoring: compliant with protocols such as TO-14 and TO-15
• Workplace hygiene monitoring: targeted VOCs with cycle times as low as 2 minutes, sensitivity from ppt to ppm
• Fenceline and outdoor monitoring: aldehydes, ketones, glycol ethers, pyrolysis products, condensables, formaldehyde, H2S, mercaptans, sulfides, nitrogenous compounds (acetonitrile, NH3, amines)
• Industrial air applications: filter efficiency studies, process and emissions monitoring

Additional capabilities

• Onboard NIST library for field identification of unknown compounds
• Embedded certified permeation tubes for automatic validation at low ppb/ppt levels
• Can be configured with embedded gas generators for cylinder-free operation

caractéristiques / spécifications techniques

• Model: autoGCMS 866
• Manufacturer: Chromatotec
• Mass range: 1–300 amu
• Detector types: Faraday cup and SEM dynode
• Typical detection limits: <10 ppt (autoGCMS with airmoVOC expert), Direct MS <50 ppb for Benzene
• Detection ranges: 0.01 ppb – 10,000 ppb (airmoVOC), 10 ppb – 100,000 ppb (chroma FID), up to 100% (direct MS)
• RSD: <3% concentration (48 h), <0.3% retention time (48 h)
• Data storage: 128 GB SSD, full chromatogram and data storage
• Display & connectivity: 10" TFT LCD, USB, RS-232, MODBUS RTU/JBUS
• Cycle time: from 2 min (fast GCMS) to ~60 min (trap GCMS >100 compounds)
• Gas supplies: H2 (30 ml/min @ 2 bar), Air (180 ml/min @ 3 bar)