So...front end ion mobility things like TIMS are gas vs electric pull, right? So what happens if you run 5x the flow rate for your LC input? Will that alter the gas pressure enough to change your perception of the collisional cross section (CCS) and thereby change the observed 1/k0 values?
Really really cool study on this here!
You'll note they're using the ESI source, but if you're using the CaptiveSpray you're blasting your solvent directly into your glass capillary, right? I suspect that you'll see something similar when going from 100nL to 2 uL/min!
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