Method of transporting ionic fluxes in the ion source ionization at atmospheric pressure gas chromatography-mass spectrometry GC-MS

摘要

A method of transporting ionic fluxes in the ion source ionization at atmospheric pressure gas chromatography-mass spectrometer GC-MS based on the formation of the gas transporting jet ions, coaxial, ventilated area formation of ions swirling vortex stream to form a bulk swirl flow with an axial passage, and additional gas flow forming the vortex sampling stream as a composite vortex focusing the ions on the sampling flow axis in the center of the vortex core, characterized in that the ionization region flow steam-gas samples exiting heated by capillary GC coaxially blown laminar flow of nitrogen, under normal conditions, and the linear the flow rate of the gas-vapor and nitrogen samples are equal, and the total flow exceeds the flow of bleed in the unit interface.