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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Anal Chem. 2011 Jun 13;83(13):5078–5085. doi: 10.1021/ac200985s

Fig. 2.

Fig. 2

Normalized spectra for the 2+ and 3+ ions of variants 1 – 4 from solvent A, using DV = 4 kV and 20 – 70% He as marked (50 – 70% He for 2). The EC axes are linearly scaled such that the base peaks of 1 (in either charge state) have EC = 1. Features mentioned in the text are labeled.