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Chapter 3 Peak Detection and Labeling
3-38 Applied Biosystems
3
Contents
of peak list
The peak lists contain the following information.
Chromatogram
peak list
Each entry represents one chromatographic peak in the trace
and includes:
• Index, a sequential number assigned to each entry in
the peak list
• Spectrum # or retention time (minutes), determined by
the command selected from the Display menu
• Lower bound (spectrum # or minutes)
• Upper bound (spectrum # or minutes)
• Peak height (calculated relative to zero)
• Peak area (calculated relative to local baseline)
Spectrum peak list Each entry represents one spectral peak in the trace and
includes:
• Index, a sequential number assigned to each entry in
the peak list
• Centroid or Apex mass (reflects the Mass Type
selected in the Peak Label dialog box)
• Lower bound (m/z)
• Upper bound (m/z)
• Charge (z)
• Peak height
• Relative intensity (calculated relative to zero, not to
baseline)
• Peak area (calculated relative to local baseline)