Direct flow injection analysis nebulization electrospray and...

Details Direct flow injection analysis nebulization electrospray and... Direct flow injection analysis nebulization electrospray and...

G - Physics

01

N

G01N 30/18 (2006.01) G01N 27/62 (2006.01) H01J 49/10 (2006.01)

Patent

CA 2606480

A method and apparatus for Flow Injection Analysis (FIA) into Atmospheric Pressure Ion sources (API, 105) including Electrospray (ES) and Atmospheric Pressure Chemical Ionization (APCI) sources whereby the sampling and spray needle (100) are one and the same. The sampling and spray needle (100) configured with an autoinjector apparatus or used in manual injection is introduced directly into a mating ES or APCI probe (101) configured in an API source (105). Such a sampling and spray needle (100) eliminates the need for injector valves, transfer lines or additional fluid delivery systems in FIA into API sources (105) interfaced to mass spectrometers or other chemical analyzers. The use of a sampling and spray needle (100) configuration reduces component costs, liquid dead volume, sample dilution effects, and minimizes cross contamination effects, solvent consumption and waste while increasing sample throughput.

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