Spatial distribution of the dropless ESI charged particles at IMS entrance

Abstract

An experimental study and comparison of spatial distributions of charged particles for conventional electrospray (ESI) and for dropless electrospray with a dynamic flow splitter of analyzed solution at atmospheric pressure and room temperature was carried out. Comparison of distributions shows that the characteristic regions of ion formation differ significantly. The obtained dropless electrospay spatial distributions are matched with inlet parameters of optimized transfer system of an ion mobility spectrometer (IMS) based on electrostatic focusing of the charged particles.