AirYX HONO / NO₂ Analyser (Model ICAD 200L)

AirYX HONO / NO₂ Analyser (Model ICAD 200L)

A HONO/NO₂ analyser for precise measurements, utilizing Iterative CAvity enhanced DOAS optical absorption spectroscopy (360-390 nm)

  • Patented, fast, accurate and direct nitrous oxide and nitrogen dioxide detection
  • Provides real-time measurements with rapid data acquisition
  • Simple operation, no calibration gas required
  • High stability (not sensitive to shocks, vibration, temperature)

How it works

The ICAD (Iterative CAvity enhanced DOAS) HONO / NO₂ measurement system uses direct optical absorption spectroscopy in the spectral range between ~ 360 to 390 nm.

By measuring the absorption spectrum and applying the ICAD algorithm, the unique and characteristic absorption structures of HONO and NO₂ are directly identified and separated from other overlapping absorptions like water vapour (H₂O) or O₄. This gives the advantage of direct HONO and NO₂ measurements (in comparison to LOPAP and CLD) without interferences to other substances or the need of drying mechanism which introduce new interferences (e.g., LOPAP, CLD, CRD, CAPS).

Applications include:

  • High precision HONO / NO₂ measurements (science, research, background air pollution monitoring)
  • Urban air quality monitoring (outdoor, streets, tunnels, street canyons, mobile measurements)
  • Indoor air quality and workplace monitoring
  • Mobile, quick and precise HONO / NO₂ pollution study, personal exposure studies e.g., for workspaces, pedestrians
  • Emission monitoring (e.g., stacks)

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