Patent ID: 6831274
Filing Date: 2004-12-14
Classification: H01J

Abstract:
A method for increasing the total ion current produced from a liquid sample introduced into a mass spectrometer comprising the steps of:a. providing an array of spray emitters, b. providing said liquid sample in at least one reservoir formed on one side of said array, c. interfacing the opposite side of said array with the entrance to a mass spectrometer, d. forming an electrospray of said liquid sample at each opposite side of each emitter in said array, e. directing said electrosprays into said entrance of said mass spectrometer, f. providing an ion funnel within the interior of the mass spectrometer and adjacent to the entrance to the mass spectrometer at the opposite side as said array of spray emitters. g. further directing the electrosprays through said ion funnel, h. and further comprising the step of enhancing the hydrophobicity of the array.