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Publication Detail
Back to basics: Removing multiplicative effects (1)
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Davies AMC, Fearn T
  • Publication date:
  • Pagination:
    24, 28
  • Journal:
    Spectroscopy Europe
  • Volume:
  • Issue:
  • Status:
  • Print ISSN:
Classical spectroscopy involves making measurements of absorptions in clear media, which can be computed by applications of Beer's Law called the Bouguer-Lambert-Beer Law. A new set of spectra, which were generated from the upper sepctrum, three have different off-sets, three have different multiplicative effects and three have different off-sets, slopes and multiplicative effects. The spectra were generated in an Excelâ„¢ spreadsheet and then transferred to the Unscramblerâ„¢ program and subjected to differing spectral treatments. These spectral treatments include first derivative, second derivative and standard normal variate (SNV). SNV is one of the popular methods of correcting multiplicative effects invented by Ralf Barnes and colleagues.
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