Charged droplet spray probe

Details Charged droplet spray probe Charged droplet spray probe

B - Operations, Transporting

05

B

B05B 7/06 (2006.01) B05B 5/03 (2006.01) H01J 49/04 (2006.01) H01J 49/26 (2006.01)

Patent

CA 2508088

An improved sample introduction probe is disclosed for the production of ions from liquid sample solutions in an electrospray ion source. Nebulization of a liquid sample emerging from the end of an inner flow tube is pneumatically assisted by gas flowing from the end of an outer gas flow tube essentially coaxial with the inner sample flow tube. The disclosed probe provides for adjustment of the relative axial positions of the ends of the liquid and gas flow tubes without degrading the precise concentricity between the inner and outer tubes. Additionally, the terminal portion of the outer gas flow tube may be fabricated either from a conductive or dielectric material, thereby allowing the pneumatic nebulization and electrospray processes to be optimized separately and independently. Hence, the disclosed invention provides a pneumatically- assisted electrospray probe with improved mechanical and operational stability, reliability, reproducibility, and ease of use compared to prior art probes.

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