MODEL 1000 SEP 2005
DESCRIPTION
1-15
In a single peak situation, peak area is the area of the component peak between the curve and the
zero reference line. The peak height is the distance from the zero reference line to the maximum
point on the component curve. The value and location of the maximum point is determined from
quadratic interpolation through the three highest points at the peak of the discrete valued curve stored
in the GC Controller.
For fused peak sequences, this interpolation technique is used both for peaks as well as valleys
(minimum points). In the latter case, lines are dropped from the interpolated valley points to the zero
reference line to partition the fused peak areas into individual peaks. The use of quadratic
interpolation improves both area and height calculation accuracy and eliminates the effects of
variations in the integration factor on these calculations.
For calibration, the GC Controller may average several analyses of the calibration stream.
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