Peak Valley Ratio - Agilent Technologies 8453 Operator's Manual

4
Integration
Baseline Allocation
Figure 13
Baseline tracking (no penetration) is not available for solvent peaks, with their child peaks
N O T E
and shoulders.
Advanced Baseline Tracking
In the advanced baseline tracking mode, the integrator tries to optimize the
start and end locations of the peaks, re-establishes the baseline for a cluster of
peaks, and removes baseline penetrations (see
cases, advanced baseline tracking mode gives a more stable baseline, which is
less dependant on slope sensitivity.

Peak Valley Ratio

This user-specified parameter is a constituent of advanced baseline tracking
mode. It is used to decide whether two peaks that do not show baseline
separation are separated using a drop line or a valley baseline. The integrator
calculates the ratio between the baseline-corrected height of the smaller peak
and the baseline-corrected height of the valley. When the peak valley ratio is
lower than the user-specified value, a drop-line is used; otherwise, a baseline
is drawn from the baseline at the start of the first peak to the valley, and from
the valley to the baseline at the end of the second peak (compare
page 92 with
92
Standard baseline tracking and baseline tracking (no penetration)
Figure 14 on page 93).
Figure 12 on page 91). In many
Understanding Your Agilent ChemStation
Figure 13 on