The Start Of The Baseline; Tick Marks; The End Of The Baseline - Agilent Technologies 8453 Operator's Manual

4
Integration
Baseline Allocation

The Start of the Baseline

If no baseline is found at the start of the run, the start of the baseline is
established in one of the following ways:
• from the start of the run to the first baseline point, if the start of run point
• from the start of the run to the first valley point, if the start of run point is
• from the start of the run to the first valley point, if the first valley
• from the start of the run to a horizontal baseline extended to the first

Tick Marks

Tick marks identify the beginning and end of a peak. Their positions are
determined by the peak start and peak end times, saved in the peak table.

The End of the Baseline

The last valid baseline point is used to designate the end of the baseline. In
cases where the run does not end on the baseline, the end of the baseline is
calculated from the last valid baseline point to the established baseline drift.
If a peak ends in an apparent valley but the following peak is below the area
reject value as you have set it, the baseline is projected from the beginning of
the peak to the next true baseline point. If a peak starts in a similar way, the
same rule applies.
90
is lower than the first baseline point,
lower than the first valley,
penetrates an imaginary line drawn from the start of run to the first
baseline,
baseline point.
Understanding Your Agilent ChemStation