Collision Cross Sections and Reduced Mobilities of Endogenous Steroids in a Drift Tube IM-MS Using Nitrogen Bath Gas

摘要

We establish the rst report of reduced mobilities and collision cross sections for a group of isobaric endogenous steroid hormones. At present instrument resolving power is insucient to fully separate these species by ion mobility alone. Future work will focus on the glucuronide and sulfate conjugates of these compounds as well as other endogenous steroids both free and conjugated Alternative strateges for IMS separation will be explored.