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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2009 Sep 17;21(1):34. doi: 10.1016/j.jasms.2009.08.026

Fig. 4. The resolving power of MALDI-LTQ Orbitrap XL as a function of m/z and relative peak intensity.

Fig. 4

Resolution values measured from MS spectra of the isolated Nup84 samples were scattered against m/z. Results are shown for spectra acquired at resolution settings of 60,000 (panel A) and 30,000 (panel B). The colors of the data points indicate relative peak intensity. Each data set, containing approximately 26,000 measurements, was split according to the peak intensity into —Top 1/3, —Middle 1/3 and —Low 1/3 categories and plotted separately. The peak intensities were drawn to the same scale for all plots. The color bars illustrate the corresponding intensity ranges, while the histograms represent the distribution of the observed peaks. The parameters of the correlations between resolving power and m/z are summarized in Panel C.