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Definition: Tailing factor. The tailing factor is a measure of peak tailing. It is defined as the distance from the front slope of the peak to the back slope divided by twice the distance from the center line of the peak to the front slope, with all measurements made at 5% of the maximum peak height.t is defined as the distance from the front slope of the peak to the back slope divided by twice the distance from the center line of the peak to the front slope, with all measurements made at 5% of the maximum peak height.
Peak tailing is often measured bythe peak asymmetry factor (A s):where a is the width of the front half ofthe peak, and b is the width of the backhalf of the peak measured at 10% of thepeak height from the leading or trailingedge of the peak to a line droppedperpendicularly from the peak apex.rom a practical standpoint, it ismuch easier to measure the peak width athalf the peak height. The resolutionequation using the half-height method iswhere w 0.5,1 and w 0.5,2 are the peakwidths measured at half height.