Method and apparatus for feedback controlled electrospray

Details Method and apparatus for feedback controlled electrospray Method and apparatus for feedback controlled electrospray

H - Electricity

01

J

H01J 49/04 (2006.01) B05B 5/053 (2006.01) B05B 5/08 (2006.01) G01N 27/62 (2006.01) G01N 30/72 (2006.01) G01N 37/00 (2006.01) G06F 17/14 (2006.01) H01J 49/10 (2006.01) G01N 21/85 (2006.01)

Patent

CA 2448387

A capillary nozzle (1) is provided with mobile phase by mobile phase pump (2), which pumps the mobile phase through the capillary to discharge from the nozzle at opening (11). Electrical voltage is applied to capillary nozzle (1) by high power supply (3) through electrode (4). A counter electrode (5), which is incorporated into the inlet of a mass spectrometer is "grounded", i.e., is at ground potential. The light source (7) illuminates electrospray (6) with intense light, which is positioned and focused by lens (71), and the light passing through the electrospray is detected by a photodetector, which generates an electronic signal which is interpreted by a computer, which then adjusts the distance between the electrospray nozzle and the counterelectrode of adjusts the voltage applied, to optimize the electrospray.

L'invention concerne un système de commande de rétroaction destiné à une buse d'électronébulisation utilisant un système optique afin de surveiller et de réguler la morphologie dynamique ou statique du fluide sortant de la buse.

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