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What causes poor chromatogram peak shape when using thermal desorption?

There are a number of causes of poor peak shape in chromatograms when using thermal desorption. These can give rise to quite distinctive symptoms, including:

  • Tailing or broadening of early-eluting peaks.
  • Generally poor peak shape.
  • Broad peaks.

Application Note 006 gives a comprehensive explanation of the underlying causes of each of these.

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