. 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

Table 1.

Collision cross sections of alkali and alkaline earth metal coordinated heparin octasaccharide in the 4⁻ charge state. Either one potassium or one calcium coordinated octasaccharide shows two collision cross sections resulting from ATDs with two ion populations in the ion mobility spectrum. The data are from five individual measurements.

a) Alkali metal coordination
# of adduct	Na⁺	K⁺
# of adduct	CCS(Å²)	CCS(Å²)
0	413.22 ± 0.00	413.22 ± 0.00
1	381.08 ± 0.90	377.45 ± 0.00
1	381.08 ± 0.90	358.12 ± 0.00
2	353.20 ± 1.47	352.18 ± 0.00
3	349.56 ± 0.73	348.39 ± 0.72
4	346.26 ± 0.00	338.52 ± 2.64

b) Alkaline earth metal coordination
# of adduct	Mg²⁺	Ca²⁺
# of adduct	CCS(Å²)	CCS(Å²)
0	413.22 ± 0.00	413.22 ± 0.00
1	376.17 ± 0.00	380.21 ± 2.37
1	376.17 ± 0.00	359.56 ± 1.22
2	347.63 ± 0.73	349.23 ± 0.00
3	342.49 ± 1.30	336.08 ± 0.00
4	335.39 ± 1.34	332.10 ±0.90