Patent ID: 6147345
Filing Date: 2000-11-14
Classification: B05B,H01J

Abstract:
An electrospray device comprising:a. a capillary means for introducing liquid sample;b. a chamber for receiving said liquid sample, which chamber includes at least a first wall in which said capillary means is situated and at least a second wall;c. a voltage supply means for maintaining a high electrical potential difference between said liquid sample within the capillary means and said second wall, whereby the surface of said liquid sample is distorted at outlet of said capillary means into one or more electrospray cone-jets;d. a counter-ion generation means for creating gas-phase counter-ions of opposite relative polarity to the said liquid sample potential;e. a control means for regulating the supply of said counter-ions.f. a steering means for directing the said gas-phase counter-ions into the surface of the said electrospray cone-jet at the outlet of the said capillary.g. means for evaporating the said liquid sample to produce gas phase ions from said sample which are introduced into a mass spectrometer or other gas phase ion analyzer.