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. Author manuscript; available in PMC: 2019 Sep 15.
Published in final edited form as: Rapid Commun Mass Spectrom. 2018 Sep 15;32(17):1473–1480. doi: 10.1002/rcm.8181

Figure 2.

Figure 2

Spectra from ToF-SIMS analysis in positive ion mode of a DAG (positive) and TAG (negative) standards, both mixed with a saturated NaCl solution. Zoom in shows that the m/z 643.5 peak is only detected during the DAG analysis. Intensities were normalized to the intensity of the m/z 603.5 peak in both spectra. Analysis is done with using 40 keV (CO2)6k+ ion beam at a primary ion dose of 2 × 1013 ions/cm2.