Analyzing the Peak Purity
Visual Check of Iso Line Plot

The visual check of the Iso line plot is a method that allows peak purity evaluation. High peak purity is indicated by:

  • All recognizable absorption maxima are located vertically below one another in direction of the wavelength axis.

  • The maxima are separated so that the surrounding iso lines do not touch (no overlapping).

  • Pure peaks have (local) symmetry or an idealized ellipse shape in the maximum.