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Creating an Extracted Absorbance Chromatogram (XAC) (Mariner Data Only)
Data Explorer
™
Software User’s Guide 4-15
4
From the
Spectrum window
To create an extracted absorbance chromatogram for a
wavelength range from the Spectrum window:
1. Click the Chromatogram window to activate it.
2. From the Display menu, select Traces, then select a
DAD TAC or DAD Channel chromatogram.
The TAC or Sig Absorbance trace appears in the
Chromatogram window.
3. Select Duplicate Active Trace from the Display menu to
keep the original data displayed after processing.
4. Double-click the left mouse button or right-click-drag over
an area of interest in the Chromatogram window.
A DAD Spectrum appears in the Spectrum window.
5. Click the Spectrum window to activate it.
6. In the Spectrum window, right-click-drag over the region of
interest. The width of the box you draw defines the precise
wavelength range used in the extracted absorbance
chromatogram.
The extracted absorbance chromatogram is displayed
in the Chromatogram window (Figure 4-7) with an XAC
trace label and the center mass and window, or the
mass range indicated in the trace label.