Near Infra-Red Spectroscopy (NIR)

Near Infra-Red Spectroscopy (NIR)

What is NIR?

Near-infrared spectroscopy (NIRS) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from about 350 nm to 2500 nm). It is accurate, reliable, rapid and non-destructive, requiring no sample preparation.

NIR works because specific organic molecules absorb specific wavelengths of NIR (near infrared) light energy. The absorptions are directly correlated with the concentration of the organic molecules. Spectroscopy instruments detect molecular overtone and combination vibrations.

Applications could be as concentrated as neuroscience and medical screening, as local as asbestos detection or as far-reaching as agricultural data collected from aircraft or satellites.

Applications for NIR

  • Mining And Exploration
  • Remote Sensing
  • Quality Control in Soil, Food and Agriculture
  • Waste Management
  • Atmospheric Chemistry

PAS provides leading NIR analysers and supporting software.

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