Method of operating quadropole ion trap chemical ionization...

Details Method of operating quadropole ion trap chemical ionization... Method of operating quadropole ion trap chemical ionization...

H - Electricity

01

J

324/23

H01J 49/10 (2006.01) G01N 27/62 (2006.01) H01J 49/42 (2006.01)

Patent

CA 1241373

ABSTRACT The method of mass analyzing a sample (analyte) in a quadrupole ion trap in a chemical ionization (CI) mode which comprises the steps of introducing analyte and reagent molecules into the ion trap having a three dimensional quadrupole field in which low mass ions are stored, ionizing the mixture whereby low mass reagent ions and low mass analyte ions are trapped, changing the three dimensional field while allowing the reagent ions and analytic molecules to react to form product ions and trap higher mass product ions, scanning the three dimensional field to successively eject the product ions and detecting the product ions.

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