Clarity INT9 A/D Guide de l'utilisateur télécharger pdf (Page 38)

Clarity - Getting Started First “Analysis”

5.5.2 Chromatogram processing

Comments

After stopping an analysis it is advisable to

check and optimize the integration parameters.

The key parameters are Peak Width

and Threshold. Their simplified definition is:

• The Peak Width parameter determines that all

distinctly narrow peaks, compared to the de-

fined value, will not be integrated.

• The Threshold parameter determines the noise

threshold, which means that only peaks of at

least double the height of the defined value are

detected.

Note: In reality, however, the situation is more complex

as it always combines the mutual effects of both

parameters and the peak shape.

Fig. 16. Method Setup - Integration

Both parameters can be applied to the whole

chromatogram (Global) or to a defined interval

(Local).

The

Global (Local) Peak Width and

Global (Local) Threshold interactive

functions in the

Chromatogram window will help

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Clarity INT9 A/D Guide de l'utilisateur Page 38