Skip to main content
. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Mass Spectrom Rev. 2011 Jul 13;31(1):134–178. doi: 10.1002/mas.20342

FIGURE 5.

FIGURE 5

Two-dimensional mass spectrometric mapping of a mixture of phospholipids in the neutral-loss scanning mode. The mixture of phospholipids is identical to that used for acquisition of mass spectra in Figure 4. 2D mapping with neutral-loss scans was conducted with mass resolution of 0.7 Th unit by unit from 50 to 950 amu. Each neutral-loss scan was acquired at a scan rate of 0.5 s between m/z 550 and m/z 950 for 1 min in the profile mode. The y-axis mass in the map was plotted after transforming the neutral-loss data by subtracting the neutral-loss mass from the molecule ion mass. Absolute ion counts in each mass spectrum were displayed after averaging the absolute ion counts of each individual data point.