Spectral subtraction

{
  "id": "MLC-T-CHM-011153",
  "term": "Spectral subtraction",
  "field": "Chemistry",
  "definition": "A computational technique used to remove the contribution of an interfering component from a measured spectrum, revealing the spectrum of the analyte of interest. This involves subtracting a scaled reference spectrum of the interfering component from the mixed spectrum. The method is commonly applied in infrared and Raman spectroscopy to isolate the signals of specific compounds.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "Raman spectrum",
    "signal-to-noise ratio",
    "spectrum",
    "wavenumber in vacuum"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 674 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/spectral-subtraction/"
}