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. Author manuscript; available in PMC: 2017 Dec 27.
Published in final edited form as: Anal Chem. 2017 Oct 30;89(22):12176–12184. doi: 10.1021/acs.analchem.7b02827

Figure 2.

Figure 2

Plot depicting the required resolving power to separate two compounds in ion mobility with a known percent difference in cross section. Various levels of separation efficiency are indicated along the top panels both in terms of two-peak resolution (Rpp) and visually by means of percent separation. Previously published ion mobility separations (c.f., Table 2) are referenced in the plot and represent various ion mobility techniques. The techniques labeled “Other” (green triangles) include FAIMS, OMS, and cyclic IMS. Resolving powers for traveling wave and cyclic IMS instruments are reported here in the ion cross section domain (CCS/ΔCCS).