Fig. 5.

Comparison of experiment and theories generalized to a wide range of reduced mobility values. (A) Singly-charged SDGRG peptide measured in nitrogen drift gas (K₀ = 1.02 cm²/V·s) exhibits good correlation to both theories. (B) Singly-charged quaternary ammonium cation with ten-carbon branches (TAA10) measured in carbon dioxide drift gas possesses a very low mobility value (K₀ = 0.50 cm²/V·s), and here the semi-empirical resolving power better predicts the experimental resolving power of this system. (C) The triply-charged melittin peptide in helium drift gas exhibits a high mobility (K₀ = 3.03 cm²/V·s) as well as being multiply-charged, which despite the unconventionally high mobility still shows good correlation to the semi-empirical resolving power developed in this work.