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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Int J Mass Spectrom. 2011 Jun 1;303(2-3):191–198. doi: 10.1016/j.ijms.2011.02.003

Figure 4.

Figure 4

Isotope distributions and arrival time distributions of heparin octasaccharide bound to a) one potassium ion b) and one calcium ion. The theoretical monoisotope mass difference is 2.2 mDa between K+ and Ca2+. There are two slightly different ion populations corresponding to K+- and Ca2+-coordinated octasaccharide in the ion mobility spectrum.