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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Anal Chem. 2016 Oct 17;88(21):10654–10660. doi: 10.1021/acs.analchem.6b03081

Figure 2.

Figure 2

SEC-MS extracted mass spectra for Arixtra. Top: mass spectrum with no ion suppression, showing abundant ammonium adducts for the 2– charge state. Bottom: use of an online ion suppressor results in deprotonated ions with no ammonium adducts.