130 Understanding Your Agilent ChemStation
6 Peak Identification
Types of Peak Identification
Types of Peak Identification
There are different techniques that can be used to match sample peaks with
those in the calibration table of the ChemStation software.
Absolute Retention/Migration Time
The retention/migration time of the sample peak is compared with the
expected retention/migration time specified for each component in the
calibration table.
Corrected Retention/Migration Time
The expected retention/migration times of component peaks are corrected
using the actual retention/migration times of one or more reference peaks,
and the matching process is done using these corrected (relative)
retention/migration times. The reference peak or peaks must be specified in
the calibration table.
Peak Qualifiers
In addition to identifying peaks by retention/migration time, you can use
peaks qualifiers to allow a more precise result. If more than one peak occurs
in a retention/migration time window then qualifiers should be used to
identify the correct compound.
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