Device and method for forming ions
AssigneeUniversity of Washington
InventorsHoule Wang, Murray Hackett
Life of this patent
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Abstract
A device and method for forming ions by inductive ionization is disclosed. The device is an ion source that includes a capacitor having a pair of electrodes separated by a dielectric material. The method of the invention uses the capacitor-based ion source to form positive and negative ions including multiply-charged ions.
Claims40
A device for forming ions by induction ionization from a liquid sample containing a neutral polyatomic molecule, comprising an ion-forming capacitor having a pair of electrodes separated by a dielectric material.
A method for generating ions by induction ionization from a liquid sample containing a neutral polyatomic molecule, comprising the steps of:
- (a) introducing the liquid sample into an ion source, wherein the ion source comprises a capacitor having a pair of electrodes separated by a dielectric material;
- and
- (b) applying a voltage to the capacitor thereby forming ions from the polyatomic molecule.
A device for forming ions by induction ionization for mass spectral analysis from a liquid sample containing a neutral polyatomic molecule, comprising:
- (a) an ion source for forming ions from the sample, the ion source comprising a capacitor having a pair of electrodes separated by a dielectric material;
- (b) a sample inlet for introducing the liquid sample to the ion source;
- and
- (c) an exit for directing the formed ions in the ion source to a mass analyzer for mass spectral analysis.
A method for generating ions by induction ionization for mass spectral analysis from a liquid sample containing a neutral polyatomic molecule, comprising the steps of:
- (a) introducing the liquid sample into an ion source, wherein the ion source comprises a capacitor having a pair of electrodes separated by a dielectric material;
- and
- (b) applying a direct current voltage to the capacitor thereby charging the dielectric material, wherein the applied voltage induces a charge to the dielectric material and forms ions from the neutral polyatomic molecule for mass spectral analysis.
Dependencies are inferred from the claim text.