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. Author manuscript; available in PMC: 2015 Apr 13.
Published in final edited form as: Int J Mass Spectrom. 2012 Jul 1;325-327:161–166. doi: 10.1016/j.ijms.2012.06.006

Figure 2.

Figure 2

DESI mass spectra of 10 μM lysozyme in 0.1% TFA using a spray solvent of CH3OH/H2O/HOAc (50:50:1 by volume) (a) without m-NBA and (b) with 50 mM m-NBA; DESI mass spectra of 10 μM ubiquitin in 0.1% TFA using a spray solvent of CH3OH/H2O/HOAc (50:50:1 by volume) (c) without m-NBA and (d) with 50 mM m-NBA. The peaks of m/z 700~1100 in (a) were from background leftover.