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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Anal Chem. 2011 Nov 10;83(23):9159–9166. doi: 10.1021/ac202386w

Fig. 5.

Fig. 5

Spectra for 2+ ions of protonated APLpSFRGSLPKpSYVK in H2/N2 mixtures with 0 – 85% H2, as labeled, and (bottom panel)36 He/N2 using DV = 4 kV and 74% He - the maximum avoiding an electrical breakdown. The filtering times were 0.2 s up to 80% H2. The widths (V/cm) and resolving power values are given for the major peaks. Data for more H2 fractions are shown in Fig. S5.