Atmospheric pressure ion interface for a mass analyzer

Details Atmospheric pressure ion interface for a mass analyzer Atmospheric pressure ion interface for a mass analyzer

1993-01-26

1994-10-04

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

With sample supply means

250292, B01D 5944, H01J 4900

Patent

active

053528921

ABSTRACT:
A novel atmospheric pressure ionization device for the transport of charged particle produced by at atmospheric pressure to a mass analyzer includes a liquid shield between the particle source and the sample inlet into the mass analyzer. The liquid shield may be in the form of a disk with a central aperture and acts as a spray splitter and aerofocusing device which increases the flow rate of a liquid sample into the analyzer. The mass analyzer is located in a high vacuum region and an intermediate low vacuum region is provided between the sample inlet and the analyzer. An ion optical system includes electrostatic lens assemblies in said vacuum regions for transporting charged particles from the inlet to the analyzer.

REFERENCES:
patent: 4121099 (1978-10-01), French et al.
patent: 4137750 (1979-02-01), French et al.
patent: 4885076 (1989-12-01), Smith
patent: 4948962 (1990-08-01), Mitsui

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