Minimum Area

 

Location:

Detection tab page
Report Variable (Detection Parameters)

Type:

Fixed point number

Dimension:

Signal unit * Minute

Value Range:

0.000 ... 1,000,000.000

Default:

The default setting is 0.001; that is, all peaks with an area > 0.001 [Sig.dimension x minutes] are integrated.

Related Parameters:

Maximum Area Reject

Minimum Width

Minimum Height

Description:

The Minimum Area detection parameter is used as a minimum criterion determining the area threshold below which peaks are ignored during peak detection or integration.

This parameter must be enabled at a retention time before the start of a peak. It influences peak recognition and, therefore, also the baseline.

Function:

Should only this inhibition criterion be applied, peak numbers in the integration report table may not be consecutive, because two detection phases are carried out for a chromatogram; that is, for peak detection and area calculation. The minimum area parameter might be effective in the second run only; that is, a peak may be sorted out only then, the result being a gap. The No. column of the result file thus indicates which criterion was responsible for inhibiting a peak.

 Tip:

You can hide peaks with a small area in the report without changing peak detection. To do so, in the report, select Properties on the Table menu, and then select the Reject peaks with smaller relative area than ...% check box.

 

For information about how to use individual detection parameters, refer to Integrating Chromatograms and Identifying Peaks  Defining Detection Parameters.