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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2016 Sep 19;28(1):190–199. doi: 10.1007/s13361-016-1500-3

Figure 4. Drift time values for various ESI charge states of an oligonucleotide sprayed from a NFTB/OA solution.

Figure 4

Drift times for −5 to −12 charge states of the 33-mer phosphorothioate are shown here. It is clear that while the higher charge states at low m/z region (particularly the first four peaks) have fallen on a straight line indicative of the same drift time series, lower charge states have shifted to another series with shorter drift times (the last 2 peaks fall on a second line different from the line passing through higher charge states).